Taking the Sun

by Twigai

Rating: mature
Tags: Sex, Twilight Sparkle, My Little Pony: Friendship is Magic, Alternate Universe, Human, Princess Luna, Princess Celestia
Length: 34409

On a certain night just before the vernal equinox, a pair of slippers tap out an echo down a long stone hallway. Princess Celestia seeks escape from the public eye - her little sister and a certain voyeur promise to make it a night to remember.

This story is a prequel to Taking the Sun II

On a certain night just before the vernal equinox, when the gooey paint-swirls of dusk melt into night, a pair of slippers tap out an echo down a long stone hallway. Exhausted from the cosmopolitan fiasco of her open court initiative, Princess Celestia seeks escape from the public eye - her hour is passing, and she's looking forward to a warm bath and some casual reading by a crackling hearth before bed.

Princess Luna has other ideas. Soon by her sister's side, the Moon is about to remind the Sun what true relaxation is - just how wonderful it can feel to set one's burdens aside and hand the reins off to somebody else. A touch of magic and an unexpected voyeur promise to keep the candles burning into the wee hours, while a teacher and student find a release for repressed passion under the canopy of Luna's grace.

(Note: This story is a paid commission, and may or may not represent the views or interests of the author. Story contains dubious consent, sexual petplay, BDSM, incest, and futanari, among other things. If this sort of interaction is not your cup of tea, consider moving on.)

Commissioned by: DbzOrDie. This story is based on artwork created by Shaxbert.

Published 2016-11-12 17:10:01 UTC
Last updated 2017-06-10 19:04:35 UTC

Release

Two hundred and eighty-seven.

Princess Celestia was now quite sure of the number of stone blocks that made up the front wall of the grand throne room at Canterlot palace. She had counted them three times after all, and had ample time to check her work.

Now she found herself walking the breezeway that connected her private boudoir to the more functional areas of the palace; her only companion the rhythmic clacking of the gilded slippers of her office on the polished stone. She might have lost herself completely in the melodrama of the evening; broken down into fits of grumbling the like of which she would never allow so much as a guard or handmaiden to see, but the wispy, gooey paint-swirls of dusk as they melted into night was far too captivating. She soon found her hands on the railing, her eyes lost somewhere in the lower end of the color spectrum as it danced against the sky.

Her hour was passing, and with it, her sharp, gleaming mind felt tarnished. She had spent nearly six hours at open court, and it occurred to her that she had no one to blame but herself for the endless line of prattling aristocrats looking to curry her favor. It had been her own institution, and she had given rise to it for benevolent reasons - a day of the week where any of her subjects of any station, could seek her counsel or aid with any matter they desired. She had thought what good it would do her people to see and speak to her directly, so that they might find solace in the fact that she was more than just a figurehead making rules from afar.

But it was not to be. From the first day, the Canterlot elite had glutted her halls, turning the event into a fiasco and making her all the more into a celebrity to be gawked at. As citizens with equal rights she could hardly turn them away, but they had brought with them so much glamour that the common man, invited or not, felt uncomfortable in their presence.

She sighed, and the reflexive stretching of her maw was taken by a mighty yawn. Her crown felt weary upon her brow, and the elegant robes of her office, delicate in their perfection, seemed to be lined with pockets of lead.

The evening was beautiful, but it was not her time. She sought rest.

With a haste brought on by the promise of sleep, Celestia retired to her ample apartments. She bypassed the guard with little more than a slight smile of appreciation for his diligence. Despite her grumpy mood, she could not find fault with the guards. Watching a door for hours a day could be no less a tedious and boorish job as her weekly sojourn into the cosmopolitan world she had inadvertently created.

Her posture waned, but she didn’t allow herself to slouch until two sounds mingled in her ears - the clicking of the heavy door on its hinges and the muffled tufting of her slippers as they moved from hard stone to the ample, cozy rugs that made up her private chambers. She rubbed her temples and attempted to will the throbbing behind her eyes into capitulation as she slipped off her footwear and indulged in the childish pleasure of hugging the posh carpeting with her toes.

A warm fire waited for her in the hearth. She disrobed before it and took a moment to warm her nakedness by the licking flames. Spring was coming on slowly, and though the daylight hours were warm, the absence of her heavenly body at night coupled with the natural draftiness of castles made her appreciate the attentiveness of her staff, who never let the fire die. She stood there for a time, warming the thinness of her soft flesh from head to toe before turning away to travel down the hall, where she knew a hot bath would be waiting.

Half an hour of soaking later her stiff muscles found relaxation, but at the cost of her pale skin, which felt about as perforated as her brain. She chose a moonlight blue nightie from one of her many armoires, donned it, and appreciated herself before the ovoid, full-length mirror that stood between her bookshelves. The shimmering translucence of the garment combined with its mid-thigh length was somewhat more revealing, but it had been a gift from her sister, and she could hardly turn it down. These days Celestia felt it made her feel somewhat younger - the spring that such a sensual garment put in her step was just scandalous enough for her to appreciate its effect.

Another yawn signaled her body’s exhaustion, but her mind would not quiet. It would take a bit of coddling to shut down a brain that always weighed heavily with the worry of high office, and Celestia knew the remedy – a bit of light reading on the red velvet sofa before the fire. She lowered herself onto the couch, sprawling in an undignified fashion, and was just considering a cup of tea when a jarring knock broke her reverie. She grimaced. A member of her staff would know better than to disturb her at this hour. Unless it was important.

Sighing, she yanked a sheer, thin robe of cyan and white from the wall, pulled it over her naked shoulders, tied it at the waist, and made for the door. The knock came again when she was halfway there.

“One moment,” Celestia muttered, “One moment please...”

She considered a more mundane means of opening the door, but magic has a way of building up inside when not released, and she could not recall when last she had used hers. With a slight concentration, she let a tingle flow through her hand, and was pleased to be able to rest her legs back on the couch as she turned the knob instead from several feet away. Sitting up straight with her back turned, she spoke before the intruder could.

“I require nothing further tonight. Thank you for your attentiveness, but you may retire.”

“I believe that you are the one in greater need of retirement, Sister,” Came a familiar voice.

Celestia glanced back just soon enough to watch her sister, the night princess, replace the solid oak door. Luna was dressed for an active evening; her gown consisted of flowing midnight blue robes of office, belted with an elegant crimson sash. She bore a small pouch at her waist that didn’t quite fit with the ensemble.

Celestia batted her eyes blearily. “Ah, my sister,” She managed. “It’s good to see you, but...forgive me...” She allowed another yawn to make her point without words.

Luna swept into the room like dusk, and Celestia found that she could suddenly hear crickets who were not there before, pleasantly chirping a symphony from some impossible vantage outside the high castle window. Luna raised a brow, folding her arms under her chest.

“I wonder just how long it will take you, Sister, to put an end to the aristocratic foppery that plagues you once a week.”

Celestia made a dismissive gesture with one hand and turned back to the fire as she levitated a novel from the side table to her lap. “It’s good for the public, Luna. It helps to make the both of us more personable and approachable.”

Luna shook her head and placed her hands on the back of the couch to either side of her sister, peering over her shoulder. “That was your intention from the conception of this idea, yes, but you know as well as I it has not come to that. The privileged few among our subjects make sport of the whole thing; occupying your time with trifling concerns to the point that commoners find us still as unapproachable as ever.”

Celestia thumbed absently through the book. “Nobody is keeping anybody else out of it on purpose. I can’t just tell certain people to go away and make room for others.”

“Why not?” Luna sniffed disdainfully. “They will get over it, after some time spent on their yachts or pacing around their own gilded halls.”

Celestia ran her thumb up one page; she pinched it by the corner and took it into a slow turn. “It’s not that simple, Sister. We can’t play favorites. Not with the elite, and not with the common man.”

Luna was silent for a time. When she spoke, her voice was softer in volume, but firmer in tone.

“You intend to endure, then?”

Celestia nodded. “I do. Until a good reason, other than something cosmopolitan, pops up to change it.”

“You are in need of rest.”

“Yes,” Celestia continued apologetically, “And you know I appreciate talking to you, but--”

“You are in need of...relaxation,” Luna persisted. She practically floated around the couch, coming down upon it with a poise so perfect, her gown seemed to automatically situate itself around her.

“This is how I relax,” Celestia replied, her eyes reflecting the firelight as she cast her gaze into it. “With something to read other than writs or land grants.”

“What are you reading?” Luna inquired.

Celestia responded by closing the book and resting her hand protectively over the cover, “Fiction.”

“That is a bit...vague, is it not?” Luna’s smile dripped with something syrupy, and she scooted her ample hips closer until they were brushing against her sister’s. She made a show of peering at the book, “One of your usual ‘relaxation’ stories, dear sister?”

Celestia was now eyeing the leather-bound, pocket-sized volume as well, as though she were only just seeing the object below her hand for the first time. “...what’s that supposed to mean?”

Luna chuckled. “Sister, I love you dearly, but you should not attempt to be coy. It does not suit you.”

Luna put her hand on the book. Celestia pressed down on it and mashed it into her lap, but she did little else to forestall her sister from gingerly slipping it sideways out from under her grasp. Mirthfully Luna held the book up to observe the cover. She stared at it quizzically, turned it upside down, and stared again.

“One wonders if two human beings are capable of maintaining such a position for long,” Luna observed. “Scandalous.”

Celestia folded her arms and let out a childish huff. “I can read whatever I want to read.”

“Oh, of course,” Luna tossed the book onto the opposite end table. “However, it is not what you read that interests me, Sister.” She reached out and placed her palm on Celestia’s knee. “It is what lies between the lines.”

Celestia glanced down at the hand on her thigh. It began to move, slowly stroking her there. She frowned. “I...I’m tired, Luna...”

“Yes,” Luna agreed, “I can see that. Your mind is likely worn out from your long day in the sun, and yet…here you are. The moon grows high, and it is my time now. You are merely living in it.”

Celestia made a face as she watched the hand that stroked her. “I wouldn’t be living in it if I were asleep,” She insisted. “I have business to attend to in the morning Luna. Now isn’t the time--”

Her words were cut off by her sister’s sudden closeness. Luna was at Celestia’s ear now, whispering into it, hot breath washing over Celestia’s cheek. “I know you too well, sister. Surely your staff has seen the books you read by now. They know what you’re reading, and they keep it to themselves out of decorum. But I know something they do not,” Her tongue began to gently trace Celestia’s cheek. “I know that you insert yourself into the mental picture painted by your stories. And in them, you don’t play the role that you play by day.”

A shiver ran down Celestia’s spine, prominent enough for Luna to notice it. Celestia swallowed, her creamy neck pulsing with the movement. “That...that isn’t...the case…”

“It is,” Luna cooed, prodding Celestia’s ear once more with the tip of her tongue before finally drawing back. “Your servants as not as observant as I am. I know which pages you fold down the corners of to mark for later.”

Celestia’s eyes opened wide, though she kept them glued to the fire as though her life depended on it. “...don’t be ridiculous,” She complained. “Books get old over time, a-and the pages get worn. You’re making that up. Now please,” She suddenly rose from the couch to her full height, laying a hand on her chest as if to stay herself. “I need to sleep.”

Luna stood with significantly more spring in her step than her beleaguered sister. Her hands found the silky, adorned shoulders of the crown princess, and she began to rub. “You are tense, Sister. Relax.”

Celestia was about to walk away, but the gentle massage blunted the spiny tenseness that had returned to her muscles, gratefully relaxing it away. She let out an inaudible murmur, and found herself staring at the flames again, no closer to her bedchamber.

“Your station causes you much stress,” Luna continued, her voice soft and her fingers constantly moving. “You have so much responsibility, and I know how it makes you feel. There is no need to hide it.”

Celestia felt her shoulders slump. “I...just...” she muttered, her voice tinkling from the stone walls like a wind chime, “...there’s always so much to do, and they all expect me to make every decision for them, even simple ones they should be able to handle themselves...”

“And you make every one, yes?”

Celestia nodded haltingly. “...I can’t just turn them away.”

“So, in effect,” Luna took a deep breath of her sister’s flowing mane. Her hands slipped down and wormed their way under Celestia’s arms. “In effect,” she repeated, “You make a slave of yourself to your entire kingdom. You obey every request. Even the trifling ones.”

Celestia’s breath quickened. She had no response for the claim other than to shake her head and mutter below her breath. “...that’s...that’s not it...”

“That is it,” Luna cooed, “And what’s more? You like it. Which is the real reason why you put up with it.” Luna’s hands emerged from Celestia’s armpits. She pushed through further, obliging Celestia to raise her arms slightly and watch as her little sister’s hands closed over her breasts, kneading them in their satin prison. The sun princess stared down, helpless to stop twin, tightened nubs that began to push up from under the fabric, encouraged by the machinations of her sister’s skilled fingertips.

“...ngh...”

Luna grinned, taking in the noise like music. Her grip tightened, and she lowered the bending willow of her big sister’s body back down to the couch. Celestia’s head lolled, but Luna put a finger on her sister’s chin and pushed her face up.

“Chin up, Sister.”

Luna stepped back. Her body wreathed by the crackling hearth, she undid her sash with one hand and let her stately robes slip from her shoulders, catching the little pouch at her belt before it fell. Beneath her gown lived a laced corset of midnight blue and deep amethyst that hugged her curves, ending just below her matronly chest. Her supple thighs were crafted in silk stockings the color of dusk. Between the two garments, a simple pair of black, lacy panties hugged the cleft between her thighs. She rested a fist on one hip, holding the pouch like a clutch purse, and spoke, riveting Celestia to the spot with her icy gaze.

“It is always in the back of your mind, Sister,” Luna said, tilting her chin to look disdainfully down on Celestia. “The cloying thought that you were born into the wrong station. The thought that causes you wonder if maybe, just maybe, you were never supposed to be the most high - the crown princess, who answers to no one.” She stepped forward and took Celestia one-handed under the chin, forcing her to stare at the naked breasts hovering over Luna’s corset. “What you wish for is relief. A way to satisfy your natural urge to obey - the shameful aberration in your personality that you don’t dare show to your subjects.”

Celestia, her eyes fixated on the floating, fleshy orbs before her, let out a slightly labored breath.

“Your body is already reacting, Sister.” Luna put a finger to her chin in thought. “Or perhaps I should call you my ‘pet’...or even my ‘bitch’.”

Celestia had to make a conscious effort to keep her thighs from rubbing together. The words swept into her mind, wrapping around her thoughts and perverting them into dark husks of their former selves. The sheer fabric against her pert nipples made her squirm, but she dug deep - searching for that crystal pool of resolve that hadn’t yet dried up. Its waters were thin, but she bathed her brain in them and reluctantly furrowed her brow, removing herself from her little sister’s hold without force.

“N-no Luna, I...” She placed a hand on her chest, trying again to still her breathing, “...I appreciate what you’re trying to do, but I must sleep...tomorrow is--”

“Is not tonight!” Luna cut in.

This time Luna’s hand wrapped around a lock of Celestia’s hair. Luna yanked hard, until the sun princess had to choose between wrenching away or rising with the movement.

Oh shaky knees, Celestia stood.

Eye to eye with the Sun, the Moon began her eclipse. With a guiding hand she turned Celestia away from the couch, and slipping one hand behind Celestia’s supple hip, she pulled on her leg, encouraging the Sun to lift it and thus upset her balance. With surprising strength, Luna held onto her sister’s stumbling form and lowered her onto her back on the thick, warm fur rug that stood between the sofa and the fire. Luna straddled her sister’s waist and simply pressed a hand between her breasts, over her heart.

“With this one hand I can pin you,” Luna explained. “I can hold you down, because I know you shall not resist. Deep inside, my pet, you art a creature of service.” She slipped her hand around one of Celestia’s clad breasts, flicking the nipple that capped it with her finger. “Your body does not lie.”

Celestia, her eyes lidded and her cheeks deeply flushed, lay with her arms subconsciously flung up above either side of her head. Her chest rose and fell with the weight of her breathing, and her constantly-flowing pastel hair rippled around her head.

“N-no,” She complained, “I...I have to be at court--”

Luna scowled. “If you can obey your subjects - for that is what you are doing - you can obey your mistress.”

Luna held her other hand above her sister. It began to glow, and as Celestia watched, the tiny black panties that had once protected the moon’s womanhood from the world obediently slipped down her supple thighs and floated into her grasp. Luna purposefully brushed the wadded garment against Celestia’s nose, filling the Sun with the scents of arousal and the sensation of the dampness already there.

“Open,” Luna uttered the single word.

Celestia’s eyes darted between the panties and her sister’s piercing gaze. “L-Luna, I...b-but--”

“OPEN!” Luna commanded.

Celestia felt the harsh command slide down her spine, giving rise to a shiver she could not deny. Quieting, she opened her mouth wide, softly shuddering as Luna stuffed her full of the recently-worn undergarments.

“Bite,” Luna ordered.

Celestia, mortification in her eyes, bit down on the soft cotton in her mouth. She let it mingle with her tongue, tasting the latent arousal of her sister on the fabric.

“Good,” Was all Luna said in reply. She slipped off of her sister, but leaned in to trace Celestia’s chin and lips with a finger as her other hand undid the sash that held the robe protecting her nightie. Luna smoothed the robe from Celestia’s shoulders, slipped off of her body, and grabbed the front of Celestia’s nightie, yanking on it.

“Sit up.”

Celestia obeyed. Unable to meet her sister’s gaze, she fidgeted demurely until Luna, in a burst of motion, grabbed the lovely nightie again and yanked so hard that a strip of the fabric tore away. Yelping, Celestia watched in shock as her chest bounced through the gash in her useless nightclothes, her stiff nipples now impossible to hide.

Luna reached out and unceremoniously captured the softness of one of the crown princess’s breasts in her grasp; pinning the nipple between her fingers as she unfurled the strip of torn satin with a snap from her opposite wrist. She took Celestia’s gaze, filling her vision until the Sun lost herself in the endless pools of Stygian night that made up her sister’s eyes. Her addled mind stunned, Celestia didn’t even notice that she was biting down harder on the panties in her mouth - trying subconsciously to keep them in place.

Luna took pity on her sister’s plight. Taking the strip in both hands, she pressed the fabric tightly to Celestia’s mouth, wrapping it around her face until it dug into the corners of her lips. With practiced hands, Luna tied the new gag around the back of her sister’s neck, applying just enough pressure so that its presence could not be ignored.

“You think me the fool, Pet, or assume that I am blind.”

Luna jammed her arm under the low sofa. Feeling around blindly, her fingers soon impacted with her quarry. With a smug smile she pinched the edge of the shallow box she knew was there and dragged it into the light. Celestia, her porcelain cheeks marred by a splash of crimson, bowed her head and looked silently away.

It was all as Luna had expected...and remembered. The strong leash. The toys. The thick leather collar with its staunch buckle and convenient ring. She held aloft the collar, just to make a show of appreciating it. Without looking down, she issued her next order.

“Panties. Now.”

Celestia knew better than to hide her secrets from her mistress. She didn't hesitate.

While she was listening to the shuffling noises and enjoying the silhouette the flames portrayed of her sister’s compliance against the far wall, Luna recovered the pouch she had brought with her. From it she drew two items. The first she tucked away in her palm. The second, a small round tag of flattened metal, etched with her cutie mark, seemed to catch the radiance of the stars and twinkle along with them. She attached the tag to the collar and finally turned.

Before the Moon, the Sun stood as she was bade - her soft pink panties wrapped uselessly around her right thigh. Celestia bore herself, in all her exposed femininity, to her little sister, her back straight, arms at her sides; at attention like the many guards who watched the palace. The remains of the once-attractive nightie hung by ruined straps from her shoulders, her voice sealed away by the essence of her sister in her throat.

Luna walked in a slow circle around Celestia, slapping her hips, breasts, and back. Celestia hurriedly jerked every struck area, correcting each little flaw in her posture.

“Straighter,” Luna barked. “Chest out. Back straight. Legs together. Tch, you are pathetic at this.” Luna reared back and stung her sister’s naked rump with a hard slap. To Celestia’s credit, she neither moved nor emitted a sound.

“Somewhat better,” Luna approved.

Stepping close to Celestia’s back, Luna mashed her breasts into her big sister’s creamy shoulder blades as she brushed her fluttering locks out of the way and brought the collar to bear, locking it in place. Her magic flared, and in her grasp the lock switched closed securely. It had no key.

“By our decree alone shall you be free,” Luna explained. Grabbing her sister’s shoulders, she turned her and faced her towards the room’s large ovoid mirror. She spoke again, looming over Celestia’s shoulder.

“This is better for you,” Luna cooed, slipping the last of the nightie from her sister’s elegant shoulders. “Weak and untrained, on the path to becoming a proper whore. Even the lowliest of recruits to the Canterlot guard can come to good order on command, but you?” Another hard slap made Celestia jump, “You require correction just to stand up properly. Examine your neck.”

Celestia stared at the tag on her collar

“That is my mark upon you. Show me the other.”

Celestia hesitated. Incensed, Luna drew a riding crop from the box and lit her sister’s rump on stinging fire with it. Celestia whimpered, but kept herself aloft on quaking knees.

“This box - you have kept every toy, right where I can get at it most easily. Clearly you were hoping I would make use of them again. I won’t ask you again - show me your other mark. NOW.”

Celestia turned her right thigh out. In the reflection of the mirror, just above her panties where her groin met her womanhood, was a small tattoo. In beautiful handwriting, punctuated by a moon symbol, were the words ‘Luna’s Bitch’.

Luna ran her fingers through Celestia’s ample mane, favoring her with a gentler touch. “It matches your tag. Now you have two symbols of your station to be proud of,” She suddenly took up a fistful of hair and yanked on it, “The station of my pet. And yet, I remain unsatisfied.”

Celestia blinked with surprise. She stared at Luna’s reflection, trying to ask it what was the matter without being able to speak. Luna wormed her hand under Celestia’s hair to the base of her neck. Her dark nails found a home there, and from that vantage they raked themselves down the contours of the Sun’s back to the base of her rump.

Celestia shivered, arched her back, and let out a whine that was a poor excuse for displeasure.

“You are still my equal sister,” Luna explained. “That is not permissible.”

The other small object Luna had palmed before suddenly floated into Celestia’s view - it was so close, the sun princess nearly went cross-eyed bringing it into focus. What floated before her, wrapped in the glow of Luna’s magic, was a small, ornate signet ring. Set in silver and platinum, it too was stamped with the mark of the night, embossed in high relief.

“Hold out thy left hand,” Luna ordered.

The order was obeyed immediately, and soon both princesses could both see the tapered fingers of Celestia’s pristine hand. On her ring finger was a fantastic, gem-encrusted trinket appropriate for one of her station. Luna snorted.

“Useless tripe,” Luna sniffed, “And far beyond what you are worthy of. Remove it. With your magic.”

Celestia concentrated. Soon enough, the ring was enveloped in her colorful aura. It slipped from her finger and hovered in place inches from her hand. Without pause, Luna levitated the signet ring to take over the spot, bringing it down on Celestia’s knuckle to the hilt. The instant the ring was set in place, Celestia’s aura winked out, and the bauble fell to the floor.

“I did not direct you to drop it, bitch,” Luna rumbled. “Pick it up.”

Celestia strained. Concentrated. But the ring did not rise from its new home in the carpet. Luna tanned her sister’s hide again with the crop, and Celestia automatically bent to pick the ring up instead.

“Excellent,” Luna observed. “My new toy works. Now, take it off.”

Confused, Celestia sat the bauble aside and placed her hand on the signet ring. She yanked, but as though it were anchored in concrete, the new ring did not move. She struggled with it until Luna turned Celestia to face her. Lune brought her elder sister’s hand up and kissed the ring, in a mockery of the way visiting dignitaries might kiss the ring of Equestria’s sovereign.

“I have placed a powerful curse upon your new jewelry, Pet. It cannot be removed without my approval. While it is in place, it will correct you, by taking away the power that you are not worthy of.” She drew her tongue up the nape of Celestia’s neck, pausing at her ear. “It makes you unequal to me, my pet. It puts you where you belong.”

“Mmnf...” Celestia turned and tried to kiss her sister, but the gag just bumped uselessly against Luna’s lips. Luna grinned.

“You cannot even kiss properly. I wonder, what if I were to march you to the barracks right now, and hand you over to the guards? Certainly any among their number would give much for the chance to use and abuse their Lady.”

Celestia gasped softly. Luna went on, her fingertips playing about Celestia’s collarbone as her other hand cupped each breast in turn and then ran down her tummy, trailing all the way down to her folds and back up again.

“Would you service them, like any proper Canterlot whore? I doubt it, because you are not even the equal of a whore. They are at least compensated. You would work hard for your new masters, in their barracks, with nothing in return but the love of service that I know you hide inside.” Luna grinned, “The lowliest recruit would be welcome to bend you over and have their way with you, while you rush to obey every command and welcome every blast of their seed past your defenses and into your body. You would love every minute of it, right down to the knowing grins each of them would give you whenever they passed you in the halls. Look me in the eye and deny it.”

Celestia could not meet her sister’s gaze. Unable to show her appreciation with a kiss, she merely nuzzled Luna’s cheek like an animal. Luna stroked her in turn, scratching behind Celestia’s ears like a dog. She then clipped the leash in place and gave a hard yank, purposefully making Celestia stumble.

“Come,” Luna ordered, catching the box in her magic and hoisting it up. “We will retire to my chambers.”

Fearing public exposure, Celestia hesitated. Luna yanked hard on the leash, but instead of leading her pet out into the hall, Luna dragged Celestia into her own bedroom. Confused, Celestia lost the cadence of her sister’s steps, tripped, and found herself flat on her face...in her own posh, canopied bed.

“My chambers,” Luna repeated. “Show more respect in my chambers.”

Celestia scrambled to her knees on the bed, coming again to attention, the panty-gag holding her voice to nothing but tiny, inhuman whimpers. Luna appreciated the view of her big sister, naked, collared, gagged, and in full obedience upon a bed that was clearly decorated for her. With her magic, the moon princess tossed the box roughly onto a side table and slithered onto the bed, coming up behind and beside her sister once again. She took each of Celestia’s narrow wrists in one hand and brought them together, crossed at the small of her back, while her magic brought forth a length of rope. The rope coiled like a snake, binding Celestia’s arms into helplessness under the authority of a thick knot. Luna then pressed her hand into Celestia’s back and simply shoved her forward. With no arms to brace the fall, Celestia toppled forward with a muffled yelp, her chin impacting with the bright harvest sky that made up the colors of her quilts.

“And that’s another reason you’re beneath even the level of a well-trained whore,” Luna chastised, “I shouldn’t have to tell you to present yourself for me.” She caressed her big sister’s naked rump, appreciating the supple smoothness. The creamy whiteness of each cheek was marred - deflowered by red welts the riding crop and Luna’s palm had recently gifted it with. Amusing herself with her sister’s reactions, Luna raked her fingernails across one of the larger welts, and then immediately drew them down to trace the weeping flower between her sister’s legs, flicking the engorged button there once as she went.

Celestia gasped.

Sobbed.

Moaned.

“Your Mistress can make you feel pain or pleasure, at my very whim,” Luna sang. She wormed one finger into her sister and wiggled it around, digging at the sensitive spot at the roof of her royal channel. Celestia’s squeaks increased in intensity, and Luna giggled when she finally removed the digit. Pleased, she brought the finger around and wiped it along Celestia’s cheeks, painting her upper lip with the scent of her own arousal.

“No more resistance,” Luna proclaimed. “Look at you. You’re soaking wet, and you can even smell yourself now. You were hoping Mistress would see through your play at resistance, weren’t you.”

Celestia mumbled something incoherent, but another hard smack on her tender bottom jolted her, forcing the words out.

“Yus Mssriss Uuna!”

Luna shook her head and clucked her tongue as if she were correcting a child. She stroked over her sister’s rump, prodding her other, tighter opening with the tip of a finger.

“You haven’t been keeping to your training,” Luna said with mock regret, fingering Celestia’s pucker. “This is going to be less comfortable for you than it could have been. Until you get used to it, that is.”

Forgoing her magic just for the pleasure of picking it up herself, Luna reached into the box and drew out a slightly curved cylinder of a firm, pliable gel material. Dark as a midnight sky, it too bore her mark, and she was pleased to see that Celestia had left it in the box where it was easy to find. The object was bumpy and ribbed for the pleasure of female orgasm, but Luna had other ideas in mind. With her magic, she levitated a small bottle of warming lubricant, tipped the cap, and simply spilled it in a long, clear, viscous trail over Celestia’s backside, where it began to run in rivulets between her cheeks, pooling around both her openings. Luna waited, allowing the liquid to run down Celestia’s thighs before clearing her throat.

“Your hands are already there, Sister,” Luna sniffed disdainfully. “If you don’t want this to hurt, you’d better get them dirty.”

Her wrists bound, Celestia clumsily groped at her own backside. When her fingers found her tail hole, she began to massage the lubrication into it, presenting herself for her Mistress’s examination as she did so. Celestia fingered herself, slipping one digit in and out, spreading the slickness inside her channel until Luna shooed the hands away.

“Hold still,” Luna ordered. “Mistress is not going to coddle you.”

The muscles of Celestia’s backside relaxed, even as the rest of her body tensed. She felt the toy kiss at her tight pucker, and she gasped when the tapered tip began to slide inside her, stretching her channel as it made itself comfortable. Luna pushed on it, working the nubs in while making no concessions for the quivering rump it invaded. Finally she touched the top of the symbol at the toy’s base, giving it one final push until the toy was nicely rooted into its new home.

Celestia was panting, her back rising and falling with the effort of forcing heavy breaths through only her nose.

“Your rump likes being filled like this,” Luna said sternly. “Wiggle it. Show me how much you appreciate your toy inside you.”

Celestia’s rump gave a playful wiggle akin to that of a court performer. Luna closed her eyes and concentrated, summoning her magic. Inside her mind, she could see the inner workings of the toy - the gears and springs that made up its movement. She projected a thought into it, and the toy jumped to life, vibrating and twisting inside Celestia’s channel. In response to its activation, a notch at the base of the toy that was just inside the sun princess began to inflate, until it exceeded the size of the hole around it, pushing and anchoring itself such that any attempt to expel it was rendered useless.

“We cannot have you rejecting your special toy,” Luna explained. She reached out to brush against her sister’s blossom, damp now with mingling lubrication both natural and artificial. Celestia’s opening grabbed uselessly at the retreating digits, but Luna gave them back only when her sister relented and waited patiently for the touch.

“Still so much you need to learn,” Luna commented, “Thus, you have work ahead of you tonight before you can sleep, slut. Face me, as you are now.”

Celestia scrambled to obey the command, wriggling and writhing on the bed while the toy buzzed inside her, humming just inches away from a spot where it could provide blissful release. Soon she slumped on the blankets in the same position as before, her chin resting upon them. Luna’s bare knee found Celestia’s chin, and she slid it forward until the Sun’s gaze was forcibly angled up, seeing her sister only through the cleft between Luna’s breasts.

“Look at me,” Luna commanded. “I want you to see what’s in store for you.”

Luna reached again for the box. This time, she drew forth the little pouch that she brought into the room initially with her. Rummaging through it one final time, she tossed the little canvas container away and spread out her hands. Suspended by Luna’s fanned fingers was a luxurious necklace of onyx, jet, and moonstone in settings of ornately-carved silver. As with many of the adornments of the evening, this one also bore a disk emblazoned with Luna’s mark at the throat, but the image was constantly shifting in myriad, holographic colors, as though it were passing through a field of dark clouds.

With questioning eyes and a murmur to match, Celestia stared up from her sister’s knee at the hovering accessory, following its gentle sway with her eyes as though it were hypnotic.

“Beautiful, is it not?” Luna smiled. She shifted the suspended trinket to one hand and flipped the disk over with her other to show her sister the collection of magic runes etched into the back. Celestia’s brow furrowed. Luna bemusedly noted the lack of understanding.

“Ah, but it would be a configuration of the magic tongue unfamiliar to you, wouldn’t it? It was unfamiliar to me some time ago as well, but research is a powerful tool.” She placed a hand on Celestia’s cheek and pushed her head off of her knee. The Sun floundered, her chin clumsily impacting with the mattress again until she was at eye level with the womanly secrets and scent of her little sister.

With an ominous rattling like wind chimes through an empty forest, Luna draped the necklace over her head. When the disc came to rest at the cleft of Luna’s breasts, the runes began to glow, and the symbol of the moon seemed to go from casually pacing the clouds to racing through them. Celestia glanced up and felt tingling pricks of magical energy on her cheeks, like a spray of embers from the popping hearth in the next room.

When she turned her eyes back towards her sister’s femininity, shock nearly caused her to choke on the panties that had taken her speech.

In a transparent, murky green haze centered at the apex of Luna’s feminine opening, a certain tapered head was sprouting. Gradually it gave way to a thick, veiny cylinder of masculinity that carried the new head nearly a foot away in a sweeping, curved upward arc. Luna emitted a series of grunts, and when the haze faded, a pulsing, hungry penis was looming over Celestia, naked and resplendent in all its proud glory.

For a moment, the two sisters gazed into one other’s eyes from opposite sides of the new girth. Luna shifted and blinked several times, her brain tracing the architecture of the new, unfamiliar nerves sprouting from her loins. She jerked the muscles of her new organ, and the penis twitched, bapping her sister firmly on the nose. Luna repeated the action, hitting her sister again, and grinned, reaching out to caress Celestia’s furiously flushed cheek again.

“Marvelous. I enjoy seeing you this way Sister, from behind that which I will use to claim you this night. Allow me to answer the questions you cannot speak. Yes, it is very much real - there is no mental trickery here. And yes, it is fully functional.”

Celestia’s blush deepened. She whimpered, and when Luna encouraged her forward the crown princess indulged in the shame of unabashedly nuzzling the organ with her soft cheek.

“Nn...” Luna let out a breath, running her fingers through her sister’s hair. “You shall have my seed planted deep inside you, Pet. A piece of the moon always eclipsing you from within.” Her grin broadened. “Show me how much the very idea excites you.”

Celestia hesitated. She drew back from the twitching girth and stared at it, the tip of her nose nearly brushing it as it filled her vision. The bedroom lull in her eyelids evidenced the dirty thoughts in her mind, but the organ was larger - and far more real - than anything she’d felt inside her before. Celestia glanced up at her sister with a look of uncertainty.

Luna’s brows furrowed.

“Imagine,” She scoffed, “If your student, Twilight Sparkle, could see you now. Naked and subjugated, bound on your own bed, stuffed with my worn panties and ready to serve me. And yet still you deny yourself and try to play the haughty crown princess.” Incensed now, Luna’s petting hand hardened like steel around her sister’s locks. She yanked back hard, forcing Celestia to squirm her way up onto her knees just to keep up, and wrapped her wrist around the leash at the Sun’s throat. Holding her at bay, Luna laid on Celestia’s pillow, reclining comfortably on her back - her erection sticking up like a lighthouse over troubled waters.

Luna yanked again, pulling Celestia towards her prone form. She locked eyes with her, “Impale yourself on your younger sister,” she ordered. “I can smell your arousal even from here, wench. I know how badly you want me inside you. I shouldn’t have to be bothered with doing it myself, yes?”

Celestia glanced at the penis that was patiently waiting for her, and then at Luna’s confident expression. Bound and gagged, the Sun nodded and lifted her thigh, slipping it over top of her sister’s waist and settling into a straddle - until Luna’s spire was rubbing into the softness of Celestia’s tummy.

“Look at it,” Luna demanded. “Look how ready it is to seed you.”

Celestia looked. A dab of clear lubrication bubbled from the tip of the organ. Replaced quickly by another, the first one picked out a trail down the pulsing veins of Luna’s shaft until it vanished under Celestia’s hips.

Celestia’s mind clouded over with want. Lust claimed her, and with a swift lifting of her hips, she raised herself up until the taper below was massaging her wet entrance, prodding at her engorged opening with demands of capitulation. With a deep sigh, she shut her eyes, lowered her hips, and let it happen.

“Nghahh...”

Luna couldn’t help the slight exhalation. The sensation was both foreign and fascinating, and she watched as her spire vanished into the warm softness of her sister’s femininity, piercing her until their hips came together. The hardened roundness of Celestia’s cervix as it bumped her sister’s tip signified that she was now fully involved - one hole plugged with a buzzing, enchanted toy, and the other with her own sister’s sexuality.

Her mind rolling around in the waves of new pleasure, Luna yanked on the leash, drawing Celestia’s attention. “Work,” Luna barked. “Work for your reward, whore!”

Celestia bit down on the panties. She clenched both of her channels, favoring both invaders with affection as she tried to make them feel at home inside her. She rolled her hips, drawing her button across her sister’s length and flicking it against the taper of her head. Both partners grunted, and Celestia threw her head back, her swollen passion driving her to pound out a squishy, audible, slapping rhythm with her thrusts.

Luna felt electricity in her spine, spoiling up into her brain and boiling over into a pleasure she hadn’t previously known. She clamped her hands around Celestia’s hips, the leash still wrapped tightly around one wrist. “...nngh...yes...feel it inside y-you...claiming you...you may have had toys, Sister, but you have never known a man. It pleases me t-to be your first...”

Celestia was beyond both words and her previous exhaustion, Despite her authority and power, she had always felt trapped. This side of her - the one that now bounced atop her sister - had always been there, from the early days when they had been at play as children. She had done her best to deny it. To tuck submissiveness away and enjoy it only in her mind, like a good ruler of men. But her heart knew the truth, and at length her need to submit had manifested into the private pet she was now - the one that had been instinctively wet and ready ever since Luna began touching her in the main room.

All Princess Celestia needed was an excuse to give in. Tonight, she had one, and thus she pounded her hips down on the soft body below her, inviting the hardness - her silky walls lathering Luna with adoration and begging to be gifted.

The twitching of Luna’s penis slipped out of her control and built into spasms. She yanked on the leash again, pulling Celestia’s head down. “Look at me,” She demanded. “Look at your Mistress.” Celestia’s eyes were glassy with passion, and her wild gripping sent a familiar message to the other female, who knew what it was like to have orgasms rip through her body one after another in succession.

Celestia’s back straightened and her neck jerked, but Luna held firm to the leash. “No, whore!” She barked, “You will look into my eyes when you climax!”

“Mmnf...aghnnghff...” Celestia cried ineffectually against the gag, bearing her breasts and arching her back. She fought to keep her eyes down and on her sister’s face while a second climax shot through her.

Celestia’s hips pistoned like a machine. Luna fought for control, her chest heaving, but the welling, churning need to burst was too great. With no need to hold back, she rolled her eyes and stiffened under the throes of male orgasm. She grabbed her sister’s hips and forced her down, instinctively ramming as deeply as she could - her pulsing spire blasting rope after rope of thick, creamy seed into the crown princess’s unprotected womb. Luna steeled herself, forcing down a cry of passion to demonstrate her greater control as Celestia, lost at sea, moaned hard against her gag.

Spent, the elder royal sister, bound and with her toy still at work, collapsed atop the younger, nuzzling her nose in between Luna’s breasts. Luna reached out to stroke her would-be pet again, smiling softly.

“There...good girl,” Luna cooed. “You’ve pleased me. Be proud of yourself.”

For a time, the two panting figures clung to one another, seeking only to control their mutual wild breathing until it finally began to dim into vagueness. Luna, still buried inside her sister, ran her hands over Celestia’s back while glancing at the window. The moon was high, the hours plentiful, and she was pleased she had cleared her calendar for the evening. She closed her eyes, looking into the inner workings of the plug in her sister’s rump, and by magic calmed them, shutting the toy down but leaving the base thick and unremovable.

Celestia squirmed, and Luna spoke to her-

“Be still. Feel the presence in both your secret places. They are both my presence, and from now on you will feel them both more and more often in your life, as your Mistress helps you to explore this side of yourself. Get used to them, and get used to being like this. You will not sleep this night for many more hours. Not until we are finished.”

Celestia muttered something that rang with adoration, and once again pressed herself into the softness of her sister’s breasts. Luna moved to stroke her again, but a sudden clattering noise from somewhere that was not the bed brought her instantly to full alert. Luna grabbed the bound, straddling Celestia and sat up straight, gazing at the entrance to the room.

Like a deer caught in the headlights, the diminutive, waifish form of Twilight Sparkle stood in the doorway, hovering over a stack of books that had fallen from a nearby shelf. Dressed in lavender pajamas, Twilight’s button-town top was hanging open, barely masking the contours of her modest bust. Her pants were tugged down just enough to reveal a pair of azure panties.

Twilight stared at Luna. Then Celestia. Then at her own hand, which was still buried in her panties.

She went red.

“I...this...this isn’t what it looks like!” Twilight babbled, yanking her hand from her own secret place and stuffing it, still damp, behind her back. “I wasn’t...I mean I was just, I wanted to...” She frantically made a blind grab for the bookshelf, sending a few more volumes sprawling to the floor to meet their brethren. “I-I just came to borrow a book!”

Luna raised a droll eyebrow and made no move to cover up or remove her sister from her perch. “At one in the morning, Twilight Sparkle?”

“Y...yes?” Twilight ventured, “I mean yes! Y-you know how I am! Burn that midnight oil with all my books! Books! That...that I love to burn oil with! I mean...I mean read! Read my books! Eh heh heh…”

Luna schooled her amusement into a harsh expression and merely tilted her head. “Then tell me what book that is you are borrowing.”

The statement was not a question. Twilight glanced over the title and paused, her brow furrowing in confusion.

“Well?” Luna asked impatiently.

Twilight scrunched her nose quizzically and read the title aloud, “Venus in Furs...? Is this about astronomy or something...?”

Celestia, who was by now beyond mortification, mumbled helplessly and buried her face into her sister’s shoulder. Luna continued to bemusedly lead Twilight on.

“It is a maudlin tale about bondage and submission,” the Moon explained, “Penned by the hand of a man named Masoch, whose name would eventually create a new word for our language - ‘Masochism’. That is what you intended to borrow from your teacher in the middle of the night, Twilight Sparkle?”

“I, uh...” Trapped by her own weak lies, Twilight could do little more than bow her head and let out a deflating sigh. “...y-yes?”

Luna became quickly convinced that if she rubbed Celestia and Twilight’s burning cheeks together, she could create fire. Twilight’s bare, dainty pale feet were already shuffling out into the hall. While stroking her sister affectionately, Luna addressed the new arrival again.

“It would be rude, student of my sister, to barge in unannounced and then simply vanish, would it not?”

“I, well...I guess so...” Twilight meeped.

“Since you have already let yourself in as far as your teacher’s private bedroom, we invite you to come further.” Luna beckoned with her finger, “Won’t you?”

Twilight’s eyes were everywhere, but her feet shuffled back into the bedroom. She stepped over the pile of books and soon found herself a mere step from the regal, canopied bed.

Her smile simmering, Luna finally dislodged herself from her sister and laid the bound, helpless princess down on the bed. Luna sat up and took her time stretching, her arms akimbo and her legs parted enough to give Twilight a good view of the still-throbbing erection between them.

Twilight’s eyes followed the impossible organ like a charmed cobra. “H-H-How,” She sputtered, “How did you...?”

“Do not worry about that now,” Luna interrupted. She rose, her hips swaying as she closed the distance to Celestia’s student at a swagger. Maintaining her authoritative air, Luna reached out to caress Twilight’s shoulder and ran her hand down her arm, until fingers became a vice somewhere south of Twilight’s elbow. Luna tugged.

“Don’t be shy,” The moon princess encouraged. “I know what you were doing before you got carried away and knocked those books over.”

Twilight swallowed, “Y-you do...?”

That clenched it. If Luna had any doubts before, they were dispelled with that simple admission. Luna increased her pull until Twilight’s hand came free from behind her back. Delicate, tapered fingers, wet with the juices of Twilight’s arousal, suddenly rose into their mutual field of view. Gaping as though she weren’t even certain whose hand it was, Twilight flexed her fingers and watched as Luna turned them towards her and slipped the longest one past her lips, taking it into her mouth down to the knuckle. Dazzled, Twilight watched and felt Luna sucking the finger clean. When Luna’s lips finally retreated, she spoke.

“Much like your teacher, your body does not lie,” Luna swept her arm towards Celestia without looking at her. “I may not know you as well as my sister does, Twilight Sparkle. But at the moment, it is not difficult to surmise what’s going through your mind.” Luna’s voice softened, “You are curious. So curious, that if I were to invite you to lie with your teacher and I, you would be hard pressed to turn me down.”

“Wh-what...?” Twilight’s blush somehow managed to deepen even further. She tugged weakly, but her limp wrist remained in Luna’s grasp. “N-no I...o-okay listen,” She admitted, “I...I was...um...watching for a while, but I-I couldn’t, I mean--” She waggled her chin at the bed, where her bound and gagged teacher was still watching her, “--this is a private thing between the two of you, I don’t have any business--”

Luna cut the protests off by selecting Twilight’s index finger and simply slipping it into the student’s own mouth, still wet, to silence her. Twilight’s eyes went wide.

“You were doing more than watching, Twilight Sparkle,” Luna grinned. “Your blooming flower tells a different story than the one coming from your lips.”

Finally Twilight met the deep recesses of Luna’s commanding gaze. Her eyes lidded, then closed; she suckled, drawing her own arousal from her finger until Luna no longer needed to hold Twilight’s wrist in place.

Luna considered the enchanted necklace as she sandwiched her erection between her corset and Twilight’s open top. Was it the magic that kept her stiff? Or simply the desire to dominate the ones she loved? She shrugged and pulled Twilight close, running her hands down the small of her back and over her cotton-clad bottom. Twilight stared up, spellbound, still sucking on her own finger like a child.

Luna brought one hand back up and smoothed Twilight’s head of straight, raspberry-striped violet hair that hung nearly down to her rump. She drew close, making as if to take Twilight’s lips, but a series of muffled grunts drew her attention. Intrigued, Luna turned her head to find her big sister, naked, gagged, bound and plugged, up on her knees. Celestia’s brows were turned up and her grunting was persistent.

“Mmnf…mm…mmnmnfff…”

“Oh?” Luna tilted her head. Twilight, looking on, was still captured in her embrace. “You wish to speak, Pet? Mm…very well.” Luna raised her hand, and with a simple glow of magic, Celestia’s scrap of nightie fell away from her face. Celestia was eager to speak, but she forced herself to respectfully lay the panties on the nightstand with her mouth rather than spit them out. Her voice finally restored, Celestia bent low, touching her chin to the mattress before her sister.

“M-mistress please,” The well broken-in crown princess softly proclaimed, “She’s my student, and she’s…” Celestia managed to look at Twilight through the haze of her embarrassment, “…she’s very special to me. Please let me be the one.”

Luna raised a brow. “‘The one’?” She knew what her sister meant, but she wrapped her arm posessively around Twilight anyway. “You may not. Not until you fully explain what you mean. In the presence of your student.” She was toying with Twilight’s hair now, “Do you want her enough to lay bare your true feelings, Sister?”

“Y-yes, oh yes Mistress, I’d do anything!” Celestia whimpered. She made herself look at the two who stood above her, not averting her eyes or shying away. “I…th-the truth is…I…fantasize about…my student and I…” Celestia swallowed. Searched for and found the rest of her words. “I-I’ve always wanted to…b-but please Mistress, just like with her studies, she needs to start off with a gentle hand. N-not with…the joyful beatings my Mistress gives me…”

Twilight couldn’t believe her ears. Unintentionally she spotlighted Celestia with her eyes and gaped at her. “P-Princess Celestia…” She muttered, “…m-me…? R-really…?”

Luna ignored the bewildered student in her grasp. Her attention was on Celestia. She reached out to condescendingly pat Celestia’s head. “You’d do anything?” She repeated. “Including allowing your Mistress to share the toy you love so much, that’s still invading you as we speak, with your student? Or perhaps, even share your student with your Mistress?”

Twilight’s exasperated gaze passed back and forth between the princesses. “Wait, what?”

Celestia wiggled her backside to stress her reply. “Yes Mistress, of course…please take it from me—” She stopped abruptly when the rest of her sister’s comments hit home. Her ears perked, but she fought down the reaction and leaned in to gently nuzzle at Luna’s waist, and then Twilight’s in turn, her touch as light as a brushing of silk over flesh. “I…of course Mistress, anything…j-just please, may I teach my student this new lesson…”

Luna took her hand from her sister and gestured again. Her fingers began to glow along with a spot between Celestia’s fleshy cheeks that Twilight couldn’t see – but Twilight’s eyes couldn’t possibly miss the midnight blue cylinder that slipped from Celestia’s backside and began to float towards her.

“That…wait…” Twilight swallowed, “That…that’s huge…!”

Luna couldn’t suppress a giggle. “I would call it average, Student. I take it you don’t know the joys of your other hole.”

Twilight, quelled by the correct accusation, fell silent under it. The toy levitated closer…and then abruptly ceased its journey, hovering in midair.

Luna bought the toy to eye level and examined it. With its ribbing and considerable length, it was originally intended to be placed in a different hole, but that was, if anything, all the more reason to use it the way she had been. “No,” She shook her head, “This will not do. This filthy thing might be worthy of you, Pet, but it is not worthy of anybody else.”

The toy turned and floated back, until the tip was prodding Celestia’s lips. Celestia stared at it, going cross-eyed again as she tried to bring it into focus.

“Show me that you will indeed do anything for the favor you ask, slut.”

With no resistance possible from the now magically-inept crown princess, Luna captured Celestia’s lips in the glow of her magic and wrenched them apart. The toy, with purposeful slowness, slipped into Celestia’s mouth, obliging her to suppress her gag reflex as it found a new home, vanishing all the way to the mark of the moon at its base.

Celestia, bewildered, did nothing but stare helplessly up at her sister and her student. Luna frowned. The glow around Celestia’s lips vanished, but the toy remained magically-bouyant.

“I will let go of this device,” Luna warned her sister, “If it falls to the ground, I will be very disappointed in you, my pet. You will demonstrate to your student how devoted you are to your submission.”

Celestia nodded and wrapped her lips tightly around the toy. The aura of magic disappeared. Under her own power, Celestia bent down and anchored the butt of the toy against her mattress for leverage. She then began to fellate it, cleaning it thoroughly as her Mistress bade her.

Twilight stared, but Luna could see curiosity on the student’s face that eclipsed her shock. “You see?” Luna gestured to the hardworking Sun, “By day she is your sovereign and your teacher. By night, she fantasizes about you, her student, while she submits to her little sister – who is her better. And she does so willingly.”

“I just…” Twilight reached towards Celestia but dared not touch her. Luna didn’t let her finish. She drew close to Twilight’s ear, and with her tongue, traced Twilight from lobe to chin along her jawline. “You’re going to share something intimate with your teacher,” Luna cooed. “What was so recently in her, will soon be in you.”

“B-but—“

“Shhh,” Luna’s hand wormed down to Twilight’s azure panties. “Don’t fight it. You’re far too excited and curious for that – I can feel your heart beating in your chest without even touching you there. Even if I let you go, you wouldn’t leave. Would you?”

Twilight felt the fingers playing at her petals. She sighed deeply – looking away, she shook her head.

Luna chuckled with approval, toying with Twilight’s femininity before retracting her hand and standing back. “Take off your clothes,” She ordered. “While you’re here, under me, you will be naked from head to toe. Only I shall have adornments.”

Luna purposefully never took her eyes from Twilight. She folded her arms over her corset and simply waited, allowing student to observe teacher hard at work.

“O…okay…” Twilight let the word escape on the heels of a luscious sigh. With a simple rolling of her shoulders the open top slipped away, revealing her modest, perky breasts – each capped by an already tight nipple. She hooked both her panties and her bottoms with her thumbs and slowly stepped from them one leg at a time, her supple thighs and damp womanhood kissed by the warm air of the room as they came into view for all to see.

Luna tugged on the toy with her magic, silently instructing her sister to let go. When it floated away, Luna stepped behind Twilight and spoke.

“Up on the bed, on all fours,” Luna commanded. “Don’t worry. You are my pet’s favorite. I will be gentle.”

Twilight could feel the toy’s magical aura behind her. She stiffened and hesitated, trying in vain to look at her own behind without jerking her body out of where Luna had placed her.

Noticing her student’s hesitation, Celestia managed to get herself up onto her knees. She smiled lovingly at her student, red marks still at the edges of her lips from the tightly-tied gag that had been there.

“It’s alright, my student,” Celestia whispered. “You’re going to enjoy this. Trust me as your teacher.” She leaned forward and placed one chaste kiss on Twilight’s forehead. “Just let it happen. I promise we’re going to have a wonderful time together.”

Twilight’s smile was sheepish as she felt a warm cascade of lubricant being applied to her backside. “I…I know…” She whispered. “I’m just a little nervous is all…”

Celestia leaned in, encouraging Twilight to rest her chin on her teacher’s shoulder. She then slipped back, pulling the shoulder away. Twilight, not wishing to give the scent and feel of her teacher up, was drawn into a crawl onto the bed, until she was properly displayed for Luna on her hands and knees. “Shh,” Celestia cooed. “Just relax your muscles and you’ll be fine.”

Twilight didn’t even realize how tightly she was clenching her backside. When the rounded tip of the toy began to prod at her pucker, she obediently relaxed her lower half, stiffening up top only when the toy began to sink in.

“…ngh…ahh…”

“Shhh,” Celestia whispered again, “You’re doing very well. I’m very proud of you, my student.”

Praised by her teacher, a silly shock of joy caused Twilight to bite her lip and giggle even as the toy invaded her. Its contours rubbed her in unfamiliar ways – for a moment she lapsed into confusion, but once the device finally hilted her, she found herself panting, eager for more. Luna smirked audibly, and an instant later the toy came to life, twitching and buzzing inside Celestia’s student. Instinctively Twilight clenched, her muscles attempting to dispel the object, but its magically-engorged base made the evacuation as impossible for her as it had been for Celestia.

“…a-ah…th-that…” Twilight muttered, nuzzling hard into her teacher’s shoulder. Celestia, back to being the responsible educator looking out for her junior, smiled gingerly at her sister and wiggled her bound wrists.

“May I, Mistress?” Celestia offered slyly.

Luna nodded, and Celestia’s bonds slipped loose. Luna then slipped up on the bed, propped up a few pillows, and sat back to get comfortable. A slight magical aura captured her penis, blatantly providing her with the enjoyment of a casual touch as she settled in for the show.

“Mistress is watching you both,” Luna said while lounging. “Put on a good show and entertain me.”

Freed from her bonds, Celestia enveloped Twilight in a tight hug that made the smaller girl meep. Celestia ran her hands all over her student’s form, exploring her contours in ways she had wanted to for so long.

“I can’t tell you how glad I am you walked in on us, my student,” Celestia whispered into Twilight’s ear, “We might never have shared this otherwise.”

Celestia curled her index finger around Twilight’s chin, raising her head until they were finally eye to eye. For the first time that evening, Celestia felt her submissive smile morph into a grin, while Twilight, her capillaries on fire, searched the depths of her teacher’s eyes.

Celestia pulled Twilight in and claimed her already half-parted lips. Their sweetness rivaled even Luna’s, and soon the crown princess was tilting her head and gradually feeding her student more and more of her writhing tongue. Twilight’s own tongue circled the Sun’s in an irregular, clumsy orbit, but she eventually ran out of room to move it – taking immobilization as her cue, Twilight suckled from the royal tongue that filled her, milking out a smattering of lewd smacking noises. Celestia doubled her grip, mashing Twilight’s softness into her until two pairs of taut nipples were nuzzling one another in greeting.

For a time, the only sounds in the room were the muffled buzzing of the toy inside Twilight, and the connection of teacher and student by the lips, which was already rapidly increasing in tempo. Luna sat, lazily stroking herself with her magic, a finger thoughtfully to her lips as she enjoyed the coupling of pet and student. Finally the performers parted, and Celestia traced Twilight’s trembling lips, licking away a strand of saliva that had survived the journey. She pushed slightly away from her student and reached out to cup Twilight’s breasts, one in each hand. Pleasantly amused by the unfamiliar modesty of Twilight’s size, Celestia kneaded each of the fleshy orbs, massaging them as she captured each nipple in a firm pinch between her index and middle fingers.

“…o-ohh…” Twilight gasped, instinctively arching her back and baring her chest for more. Her knees parted, and from the close vantage Celestia could as much smell the arousal on her. The Sun leaned in to kiss Twilight’s forehead and let out a whisper.

“Lay back,” She instructed softly, shifting Twilight slightly so a cushioned post of the canopy bed was aligned with her back. “Lay back for me…”

Twilight, her normally sharp mind reduced to mere putty to be molded, slipped from her knees and pressed her back up against the post. All four bedposts were wrapped in luxurious padding in the same morning sunrise colors as the rest of Celestia’s bed. To the servants it was a subtle, if perhaps eccentric bit of decoration, but to Celestia, it was a convenience for just such an occasion. Twilight, her feet flat on the mattress, parted her legs without thinking and peered weakly at her teacher from between her own pale knees. Celestia, her smile never faltering, crept on all fours towards the passion-inebriated young lady and lowered her head, making a show of taking a deep breath of the scented love rising from between Twilight’s thighs.

“Mmm,” Celestia scrunched her nose with the delight of a connoisseur at a high-class restaurant. She drew her fingers lightly over Twilight’s inner thighs and gently parted them further, revealing the glistening, puffy petals of her arousal. Celestia made another show of taking a deep breath, drawing closer, and giggling up at the darting eyes of her student when she reached out to flick at Twilight’s folds with the tip of her tongue.

Princess Celestia wasted no time beyond that. Passion welling in her chest, she buried her lips and nose into the engorged womanhood that awaited her, blocking out all scent save for that upon which she fed. Sparing only a moment to trace Twilight’s outer and inner walls, she burrowed deeply, digging with abandon at her student’s tender depths; the long licks of her skilled tongue not forgetting to rub against Twilight’s button as they passed.

“Nghhahhh…!!” Twilight bucked against the toy in her rump and jerked her hips, forcing herself not to accidentally kick her benefactor as she accepted the assault. Shamelessly her body lathered her teacher’s face with the slippery warmth of mating, her walls clenching as if to grab the tantalizing tongue and draw it inside. Celestia followed the road map she knew well, opening wide to wiggle nearly halfway into her student before pulling back to spin over the nucleus of her bloom, only to plunge in again.

“Prince…Princess Celeestoohh…” Twilight whimpered and bit her lip, trying to steel her features, but to no avail – she had already primed herself under the delicious guise of voyeurism minutes before. Cries that could not be contained churned in her breast and burst forth from her lips as she arched her neck, leaving her with little recourse but to bay at the moon like an animal while she lost herself to vaginal spasms and the throes of climax.

Celestia slid her hands under her student’s rump, caressing the softness of Twilight’s bottom as she slowed her licks and draws, carefully bringing the newcomer down from the peak of release. When her task was finally complete, Celestia placed a final, playful kiss at the peak of Twilight’s opening and glanced up at her, giggling with a carefree demeanor that nobody would ever see in court.

“Oh my student,” Celestia grinned, rising back to her knees to survey Twilight, who had since slid down the bed post nearly onto her back. “You have made me so happy this night.” Celestia reached out to stroke at Twilight’s cheek, the latter’s gaze averted and obscured under her bangs as her breasts heaved with the flow of fresh air. “From this day forth, there’s no longer any need to hide this from you. It will be so wonderful to be able to truly have you to do with as I please—” She glanced over her shoulder at Luna, “—as we please.”

Celestia closed her eyes to take in a deep breath, but an unexpected sound brought her back into the moment.

Laughter.

A giggling-tingly singsong sound like a child’s initial reaction to the Hearthswarming present of their dreams caused Celestia to glance quizzically down at her student. Twilight, her eyes still averted, heaved not only with her breathing but also with the curious shudders the sound brought on, and a look of concern marred Celestia’s brow.

“Twilight…?”

Celestia reached out towards her student, but Twilight’s arm shot up, her fingers wrapping like a manacle around Celestia’s wrist. Startled, Celestia yanked back, but Twilight used the leverage to pull herself clear up to her knees, mashing her body into Celestia’s as she gazed into her eyes from mere inches below.

Twilight’s grin was broad. Her eyes were doused in the tempered, steely resolve of desire, half lidded, and her countenance was no less than sultry – her other hand still vice-gripped to her teacher’s wrist.

“Oh Princess…” Twilight cooed like a kitten, “…you have no idea, just no idea at all…”

Celestia’s expression worked back and forth between puzzlement and concern. “I don’t know…what? Are you well, Twilight?”

Twilight nodded vigorously, her raspberry stripes bobbing out from the matted sweat at her neck to coat her back. “I’m more than alright…” She whispered, bathing Celestia in hot breath as she caressed her like an oversized puppy. “You just don’t even know how many nights I’ve wanted this…how much time I spent rubbing myself silly in doorways, not even caring who might stroll by, because I was captivated by every move you made, you and Princess Luna…”

Celestia was shocked, and it showed on her face. “You, this…this is not your first time watching us?”

Twilight could only roll her chest into Celestia’s in response, ‘humping’ in an odd sort of way with her breasts. “No no no…” she breathed, her fingertips dancing across Celestia’s cheek. “I’ve seen it so many times…and I’m so sorry I never told you before, but you might have gotten upset, and I just couldn’t give it up…every single night I spent here, I would always go to bed with such wonderful dreams, making you so happy…seeing to the needs you can only care for in private…”

Celestia flushed. “M-my needs…? My needs are—”

“To serve,” Luna interrupted, her hand coming down on Celestia’s shoulder. “Your needs are to serve and obey your Mistress, Sister. That is what you student is referring to.” She glanced at Twilight for confirmation, and received a nod before continuing. “She is saying that she’s seen you and I together many times, and she wants more than for you to simply pleasure her. She wants to give you the same release that I give you.”

Twilight’s broad, bubbly smile would have put Pinkie Pie to shame. She rubbed up against her teacher like a cat, “Mmhmm, that’s it exactly,” She confirmed.

Sandwiched between her sister and her student, Celestia sought to fit the pieces together. “How…how could I not have known this…?” She mused aloud, honestly surprised. “I…I thought I knew you so well, my student…”

Luna only shrugged. “I admit I didn’t know it either. You know I wouldn’t just casually peruse the dreams of the student you hold so close to your heart, Sister.” She made a clucking noise with her tongue. “My though, the things we do learn in coitus.”

Celestia fell silent. She watched Twilight rub and nuzzle at her breasts like a badger looking for a warm burrow, but the everpresent, lewd grin on her student’s face made Celestia see something more in the innocent movements. Luna pressed her still-excited erection into the small of Celestia’s back, and then reached around her to play with Twilight’s hair.

“What do you say, Twilight Sparkle?” Luna asked coyly. “How far would you go in order for your teacher’s Mistress to share her beloved pet with you?”

“Sh-share…?” Celestia repeated the word incredulously. Twilight looked up. From the valley of Celestia’s breasts, she pierced her teacher with a disarming glare that Celestia never expected from such a source.

“Anything,” Twilight responded evenly. “I’d do anything. Please share your pet with me, Princess Luna.”

“B-but, wait, I--”

Luna turned her sister’s chin and took Celestia into a deep, mollifying kiss. When she pulled back, the crown princess had returned to a state of silent panting.

“Better, Pet,” Luna approved. She drew close to her sister’s ear, humping her from behind while Twilight rubbed up against her from the front. “Listen well Pet, for your Mistress has plans for you.”

“…y-yes Mistress…” Celestia let the words flow out of her with the bubbling of her rekindled need. Luna went on.

“We have decided to share you with the eager girl before you. You will obey your student as you would obey me. Do you understand?”

“O-obey my…?” Celestia faltered. Twilight was giving her a hungry stare. It was a side of her student that Celestia had only ever seen when Twilight was devouring knowledge. Now that look was devouring her, and Celestia found herself shrinking before the pairs of eyes on her.

Luna brought a hand up to brush Celestia’s cheek, just as Twilight was brushing the opposite one. Seeing an opportunity, Twilight rose from her teacher’s collarbone, bringing her lips closer and closer to their goal.

“Shhh…” Luna whispered. “Let her claim your lips, Pet. I know how easily you melt into submission under a passionate kiss. Your student has watched us many times, by her own admission. She knows it too. Let it happen.”

Celestia was more aware of the leash still dangling between her breasts than ever before. She felt a tug, and without being able to see, she knew that Twilight had wrapped the leather strap around her wrist. Twilight drew in and pressed her lips home, drawing a submissive mewl from her teacher that signified surrender.

Twilight said nothing. Drawing back out of the kiss, she placed a steadying hand on Celestia’s chest. Twilight then brought up her other hand, which flared with the glow of magic that was sealed away only to the Sun, grunted, and began to wrench free the now quiet toy from her rump.

“My,” Luna commented, “How quickly she learns. Seems your other mistress has mastered your favorite toy already, Pet.” She chuckled, “Now you’re the only one among us too weak to separate yourself from it. However-” Luna reached around and placed two fingers on the butt of the toy, bracing it against Twilight’s levitation magic. “This will not do. What permission have I given you, Twilight Sparkle, to remove my girth from within your body?”

“I…I just thought…” Twilight managed, still acclimating herself to the words. Her hesitation flared anew as she presented her explanation. Luna wondered just how much of a voyeur Twilight had been in the past, and raised a brow.

“You intend to place it inside your pet?”

Twilight nodded weakly.

With a coy smile, Luna placed a single finger on Twilight’s chin, turned her head, and took her lips, pressing her tongue deeply into the student’s mouth until Twilight was obliged to suckle again. When she pulled back, Twilight was quivering slightly, loss of control in her eyes. Luna pushed gently on the toy, encouraging Twilight’s rump to take it back inside.

“It seems I need a second suppression ring,” Luna said, inches from Twilight’s face. “Until then, you will show your devotion to your teacher and I by keeping your magic away from what is mine.” She squeezed Twilight’s rump, “This is mine, and I will invade it as I choose. You will relax your muscles and accept it where it belongs, until it is anchored back inside you. Now.”

Twilight, reduced again from predator to prey, shivered with the touch of the greater mistress. She became still and relaxed, as Luna’s magic enveloped the toy and pushed it back into her rump, inflating the anchor and restarting the vibrating gears. While Twilight was whimpering softly under the renewed invasion, Luna turned to Celestia.

“And you,” Luna stated simply. “Show your student how dear is your desire to obey her.”

Celestia hesitated, but Luna shifted position and raked her down the spine with her nails, eliciting a delightful gasp from the Sun. Celestia closed her eyes and took in a deep breath, pushing out her chest and putting herself on proper display. She felt the rope brushing staunchly at her wrists. She brought them together, crossed behind her back again, and allowed her student to bind her.

Twilight brought her fist up to make it plain that she had hold of Celestia’s leash. “Good,” She said simply. “Turn around. Chin on the bed…Pet.”

Celestia shuddered at the very word as it traveled to her ears from the lips of her own student. “…yes, Mistress,” She obeyed, touching her chin to the mattress again.

Luna, intrigued now, sat back against the pillows at the head of Celestia’s bed and amused herself with magical stroking once again, But Twilight’s attention seemed to wane from the task at hand. She was looking around on the floor. When whatever she was looking for came into her field of vision, she brightened like a lightbulb, concentrated her magic, and levitated two objects that had found their way down to the carpet.

One was the strip of addled purity that had once been Celestia’s nightie. The other was a pair of azure panties. Twilight’s panties.

Both objects floated before the crown princess, who stared respectfully up at them, understanding instantly. Twilight wanted everything Luna lorded over Celestia. Everything that made her teacher’s heart skip a beat.

“Open up,” Twilight whispered again, her demands softer than Luna’s but no less insistent. “It’s where Mistress’s panties belong…”

Celestia absorbed the words, nodded softly, and opened wide as the wadded up garment slipped into her mouth. It was followed up quickly by the tight knot of the strip around her lips, tied behind her head to keep her new Mistress’s secrets deep within. Robbed of her speech again, Celestia could only whine with approval, curving her spine and pushing more of her backside out for Twilight to enjoy.

Luna’s attention was on her sister. She bopped the gag with the tip of her enchanted masculinity, only to have Celestia stare helplessly up at her. “Oh?” Luna smiled, “Do you want it?”

Celestia nodded, nuzzling the tip ineffectually. Luna merely ruffled her elder sister’s hair and chuckled.

“Perhaps after your student has had her fill of you for the evening, slut.”

Luna indulged herself in prodding her sister’s face, teasing her with what was just out of her reach, until a raspberry glow, brighter than before, drew the Moon’s attention. Luna glanced up, and for the first time that evening, Celestia saw her sister look…surprised.

“Mnf…?” Celestia muttered, curious but hesitant to raise her chin from where it had been placed. She watched as Luna’s face metamorphosed from inspired awe to a cunning grin, and the stroking of her sister’s mane increased in intensity.

Luna clucked her tongue again and spoke. “I must say, my Sister, that your tutelage never ceases to amaze me. Or perhaps your student is even more the embodiment of magic than ever we could imagine. It took me weeks to figure out how to do that.”

“Duh whuh?” Celestia muttered. She waited for Luna to stare in a direction she could not see, nod, and finally slip her finger down to Celestia’s chin, lifting it.

“Go on, Pet,” Luna said simply, “Look at it.”

With no hands to brace herself, Celestia forced her back to straighten and lifted her head, straining to stare over her shoulder. There on her knees, just as she had been before, was Twilight Sparkle…

…with differences.

The glow from Twilight’s hands was still fading, but around her neck was an exact duplicate of the necklace Luna wore. Twilight was leaning forward slightly, and the metal disc was spinning slowly from its suspension. Celestia could see that both the cloudy hologram and the runes on the other side were perfect matches. The Sun dared to look down, but from overtop her own rump she could see little but the very tip of a stiff, bulbous head, poking up from just above the curves of her own behind.

Twilight wrapped her hand around her brand new penis, just to feel the curious sensations as she drew her fingers across it. She jumped when she found her own foreskin, but the expression was quickly replaced by a knowing smile as she stared over at Princess Luna.

“This is amazing,” Twilight commented. “H-how this feels, it’s so new…”

“Indeed,” Luna replied, presenting her own and favoring herself with some gentle stroking in return. “Going from the sexual desire to be filled to the desire to fill is something that is new even to me. I must admit,” She glanced down at the tip that was still prominently staring back at her, despite having already deposited its seed once, “I wonder if I truly am as insatiable as this…organ suggests.”

Twilight waved the comment off and launched into her usual kneejerk theoretical explanation, casually stroking her teacher’s naked rump as though the topic were as innocuous as the weather. “Oh, it’s probably because our brains aren’t wired to have a penis or something. Or maybe it’s just not supposed to soften at all while it’s there—” She angled her shaft towards Celestia’s rump cheeks and rubbed it through the lubrication between them, shuddering as she did so. “I-it’s a spell that creates an object for a reason after all…mmm…”

Luna laid a hand on Celestia and pushed her head back down to the mattress. Celestia lowered herself and settled in, preparing for the inevitable, but her student surprised her yet again as Twilight’s hand came down hard on her teacher’s already red rump, giving rise to a new stinging sensation. Celestia whimpered, and Luna watched as Twilight hungrily ran her hands along the contours of Celestia’s waist and hips.

“Mmh, you just have no idea…” Twilight was practically drooling, “You’re like fine parchment from a ten thousand year old book of Equestrian history and magic…”

Luna made a face, but decided not to comment. From Twilight Sparkle, such a compliment was tantamount to a declaration of undying devotion.

“…so full of information…” Twilight nearly drooled, pressing her erection in to hump at the lubrication as she ran her hands all over Celestia’s back, “…I could just read you for hours…”

With no further ado, Twilight pushed her twitching tip down and bit her lip as it began to disappear easily into her teacher’s already damp flower. Celestia gripped instinctively against her invader, and Twilight rolled her eyes nearly into the back of her head.

“O-ohh…oh you’re just as s-soft as I thought y-you’d be…”

With no mind for Celestia’s comfort, Twilight roughly and quickly plunged herself in until the flesh of her taut tummy smacked up against her teacher’s backside. Her hands continued to explore, but when she began to forage through the jungle of Celestia’s locks, she suddenly took up a handful of hair and yanked on it so hard that Celestia was pulled nearly all the way back up to her knees, gasping against her gag with a combination of pain and pleasure.

Twilight’s hand found the Sun’s rump a second, and finally a third time, as the student’s eyes narrowed inversely to the brightening, sly smile on her lips.

“Y-you tease me every single day I’m around you,” Twilight admitted, ramming home clumsy thrusts as she spoke. “Sometimes a-after our studies I have to…go back to my room and touch m-myself for hours, w-when I could be getting something else done…”

Luna folded her arms and tilted her head, curiously listening to the admissions that flowed from her sister’s student now that the dam had been broken. “Mm,” She commented, “How shameful that is.”

“Y-yes it is,” Twilight agreed, gasping as she pistoned her hips into a rhythm and marveled at the indescribable sensations milking at her spire. “Sh-shameful for you,” Twilight yanked on Celestia’s hair again, ramming her point home in more ways than one. “L-leaning over me all the time, wearing all those w-wonderful scents…th-the way your robes hug your body…ugh, wh-who could resist that…i-it doesn’t even matter what you have between your legs…”

Luna grinned. “Do not hold back, Twilight Sparkle. Right now, she belongs to you.”

“Y-your fault I…g-get so horny…” Twilight called the crop over from the box and grasped it, slapping Celestia’s backside with it. “Y-your fault I can’t take my hands off myself…th-thinking about groping you when I grope myself…”

The crop came down again. Celestia’s moan was as delicious as any who could hear it would have expected. Twilight abruptly let the crop fall from her grasp and clamped both her hands down on Celestia’s hips, wadding the soft flesh in a hard grip.

“Y-you should b-be p-punished…nngh…” Twilight moaned as she pummeled her teacher’s womanhood, “F-for teasing me…y-you’re gonna lay there and t-take me…o-ohh…”

Luna fingered the tip of her stoic head as she casually watched teacher and student copulate. She could see Twilight’s expression crack a bit; the young one was determined to take her teacher, but it was clear she was losing herself in sensations that even Luna was having a hard time controlling - and she was driving her new pet hard. Luna scooted across the bed on her knees and laid a hand on Twilight’s back, stroking her hair against her bare spine.

“Yes, that’s it…take your teacher and make her yours…” Luna purposefully made the words drip over Twilight’s shoulders like honey. She concentrated, and the midnight glow of her magic washed over the two lovers until they were both in its thrall. Luna then forced the speed and depth of Twilight’s thrusts to slow, much to the student’s frustration.

Twilight opened her eyes weakly, pleasure dulling her brain and encouraging her not to resist. “…P-princess Luna, p-please…”

“Shhh,” Luna stroked Twilight’s naked back again. “Relax…”

Impaired by lust, Twilight accepted the magic as it washed over her, allowing its aura to solidify around her enough to move her limbs on its own. Celestia too gave herself to it. When they finally came to rest, Twilight was on her back, propped up comfortably against the pillow pile at the head of the bed – the toy yanked from her rump and cast aside. Celestia was straddling her from atop. The instant Luna let her power go, the pair of lovers began again, Celestia rolling and grinding her hips as Twilight slid her hands up her teacher’s stomach to knead at her breasts.

Luna didn’t stop there. She was behind Celestia in a flash, rubbing her erection in the same place Twilight had moments before.

Luna brought the bottle of enchanted, warming lubricant over and drizzled the remainder of it over Celestia’s hands, bathing her fingers in slippery silk as she pushed her shaft into Celestia’s grasp.

“Prepare your other Mistress,” Luna demanded evenly.

Celestia’s wrists jerked against her bonds as she massaged the last of the lubricant into the penis that throbbed in her palms. She wrapped her hands around it and gave it several appreciative grips as she coated the head, foreskin, and base in a thick layer of transparent viscosity, until Luna finally pulled away.

Celestia tensed, whimpering as her student sent her into climax. Her strength ebbing, she nearly collapsed forward, but Luna grabbed her tresses roughly and yanked them back. Crying against her gag, Celestia found herself deeply impaled by her sister’s girth even as she pressed her back up against the Moon’s chest.

“…mghh…hahh…hahh…!”

“This is what you want to be reduced to Sister,” Luna rumbled as she reached around and roughly grabbed at her sister’s jiggling bust. “The only one without speech. The only one without magic. Helpless and desperate for the embrace not only of your sister, but your own, precious student.”

Luna took Celestia by the cheek and angled her head down. “Look. Look at her.”

Twilight had given herself over to moaning. Her elegant, feminine hands were snapped tightly around Celestia’s hips like manacles, and she was ramming herself upwards with such abandon that her rump was almost losing contact with the mattress. Her chest was heaving with her puffing breaths, and she was completely lost in the bliss of the moment.

“See how happy you make her, by imparting more to her than just your knowledge,” Luna commented. “You want your student to be happy, yes?”

Celestia, who was already riding out a second orgasm that the overwhelming thrusts gifted her with, nodded stiffly. “Mm…ohmmm…mmhmm…”

“Then,” Luna went on as she pumped her sister’s rump almost in time with the hammering at her blossom. “…th-then Mistress will have you…create regular, special study sessions with your other Mistress…ngh…”

Twilight found the wherewithal to blink some cognizance back into her eyes. She gazed up at her teacher with a sly grin, still pounding her furiously, and dug her fingers even further into Celestia’s reddening hips.

“N-next time y-you t-teasssahh…tease me…” Twilight managed, “…g-gonna t-take you to my room i-instead of…g-going there myself…m-make you b-belong to your student again…o-ohh…”

Celestia moaned against her gag, nodding vigorously as the constant fullness in all her holes drove her in a passionate chain over to a third release.

Twilight could feel the welling inside her, the need so foreign and yet so familiar. She lost control of her spasms, grabbed hard, and planted Celestia down on her, piercing her to the core just as Luna wrapped her arms around her sister’s waist and rammed against her as deeply as she could invade. Everything but their mutual cries ceased, and the two hungry erections began pumping out jets of warm, creamy life, each one painting and claiming the inside of their respective channel.

“Mmgh…hahh…hahh…” Twilight, still emptying her churning desire into Celestia, spoke up weakly. “Princess L-Luna…d-does that spell…i-include a fertility blocker…?

Luna, who was mashing herself against her captured sister, panted out a response, “I…d-do not kn-know…” She chuckled, “It was…n-not my first priority to r-research that detail…”

Twilight’s grin was nigh-wicked. She reached out to stroke Celestia’s soft stomach, playfully teasing it with her fingertips. “…I guess we’ll find out!” She looked up at Celestia brightly, “You don’t mind, right Pet?”

Celestia was hanging limply in her sister’s arms, making Luna look as though she was snuggling a life-sized plush doll. She mumbled, glassy-eyed, and simply shook her head ‘no’.

“Well,” Luna slipped her hand down to Celestia’s hips, encouraging Twilight to let go one hand at a time, “I believe our pet has served us well tonight. We may want to let her retain at least some strength for the grueling duties of office, would you not say?”

Twilight, her cheeks bright with afterglow, agreed. Together, sister and student freed Princess Celestia from her bonds and laid her out naked on her own bed, above the covers, to catch her breath and sink into exhausted sleep. Luna gathered up the toy box and made for the door back to the sitting room, but Twilight couldn’t help smoothing her teacher’s hair and kissing her once, tenderly, on the forehead before she finally followed.

Back before the crackling hearth, Twilight Sparkle clicked the door to the bedroom closed and let out a powerful stretch that ran the length of her body, from the spread fingers high above her head to the tiptoe posture of her feet. Sighing with refreshed relaxation, she went instinctively over to sun herself by the fire.

“Mmm, I’m not even all that tired,” She commented idly. “You’d think I would be, but that was just…I’ve been wanting to do that for so long that I can’t seem to turn my brain off now,” She chuckled, grinning broadly into the flicker of the flames.

In that moment, Twilight suddenly became cognizant of her situation. She was still stark naked, and as she looked down to check, the penis between her legs was still eagerly twitching up at her, despite its scented coating of semen and the juices of her teacher. She flicked it once with her fingers and shivered as it sent another playful wave of passion through her.

“I…” Twilight turned around, looking suddenly lost, as though she had only just grown the spontaneous organ and was trying to grasp what had happened. “I-is it supposed to still be…like this?” She blinked, “Oh…! Oh I left my clothes in the bedroom too, I should get those—”

“No,” Came a sudden, harsh reply.

Twilight, who had already begun to move, stopped short and looked to the sofa. Luna had enthroned herself there, sprawled out with one leg up and the other dangling, her toes brushing the rug. She still had her corset and the necklace - thus a prominent erection, also smelling of her sister, remained taut between her legs. Luna waggled a beckoning finger at Twilight.

“Come here,” The Moon said simply.

Twilight obeyed, mostly out of curiosity, and stood before the couch, no longer embarrassed about what Luna might see. “Yes…?”

Luna’s grin was smooth. She was fingering an object that jangled slightly in her grasp. “Student of my sister, you are bright, but not as perceptive as you may think. You did not even notice our falsehood earlier.”

“Falsehood?” Twilight tilted her head. “What…what about?”

“While it is true that I do not peruse your dreams out of respect for my sister,” Luna explained, “I am not so much the fool to not see the obvious when it is under my nose. And you aren’t much better with subtlety than she who instructs you.”

Twilight blushed. Her eyes were drawn to the jingling, and she observed a collar of soft purple, complete with a ring, that very much resembled the one Celestia had been wearing before. It bore a tag with Luna’s mark, just as the other had, but as Luna turned it over in her fingers, Twilight could see that the moon tag was tinkling against a second tag.

A tag with Twilight’s mark.

Twilight felt herself go as red as she had when she was first discovered with her hand buried in her panties. There was no way Luna had prepared such an ornament spontaneously.

“You, um…” Twilight weakly pointed at the collar, “…you knew?”

Luna smirked “Do not be silly. With the looks in your eyes when you are both together, it is very much a mystery to me how the entire palace is unaware of your desire to share a bed. Assuming that they are not simply keeping silent merely out of decorum.”

The very idea sent Twilight into a spiral of mortification. Luna held out the collar and jingled it purposefully again.

“Do you like it? Take it then. It is a symbol of your new relationship with your mentor.”

Twilight hesitated, curiosity as usual getting the better of her. “Why is…your mark on it too?”

Luna was waiting for the question. She sat up and patted the cushion beside her. “Sit.”

Twilight sat rigidly, her rump at the edge of the seat and her legs together as Luna began to gather her hair and slide it over her far shoulder. With the raspberry stripes out of the way, Luna slipped the collar around Twilight, securing it at the base of her supple neck. Bewildered, Twilight tried unsuccessfully to look down at the tags that now sat overtop of her conjured necklace.

“Because there is a price for allowing you to keep my sister as a pet, student,” Luna finally answered. “While that tag is upon my sister’s collar, it shall denote to all that she belongs to the both of us. But my tag upon you,” Luna snerked, “…will tell all with the privilege to view it that you are mine.”

“Y-yours…?” Twilight placed her hand on the tags just to feel them between her fingers. “I…b-but I—”

“Shh,” Luna cut Twilight off and silenced her with a finger to the smaller girl’s lips. She drew close, and with bewilderment still in Twilight’s eyes, Luna cupped her cheek and took her into a deep, swirling kiss. Twilight’s lips parted automatically, her eyes closing as she accepted the offered tongue and mingled with it, jolting only when she felt Luna’s hand daintily playing with the tip of the commanding erection still between Twilight’s legs.

“It is as I have told both you and your teacher before,” Luna whispered, pulling out of the kiss to blow into Twilight’s ear, her fingers flicking over one of Twilight’s stiff nipples, “Your bodies do not lie. Under me, both you and my sister can experience levels of bliss together that you didn’t even know existed. You already know it to be true.”

“…uh…” Twilight felt the haze settle on her mind again, dulling her thoughts as her eyes came into focus over the head that Luna was stroking. “…uh huh…”

Luna kissed Twilight’s forehead. “Do not fear. Your teacher already knows how. Just give yourself to me, and in return you will have everything you’ve ever wanted…”

Luna placed her hand on Twilight’s enchanted necklace. She tugged on it roughly, knowing that while he magic surrounded it, it would not break.

“It is time for this to go,” Luna said simply. “Hold up your hand.”

Twilight’s breasts heaved slowly. Slipping into the web of Luna’s seduction, she held her hand up, palm out, and watched in awe as the ring Luna had placed upon Celestia earlier now settled on her knuckle. There was a strange tingling sensation, as though somebody had wrapped Twilight’s entire body in Velcro and was now gently tearing it away, a piece of her in the form of her power going along with it.

Luna yanked on the necklace again. Inert, the bauble easily tore free from Twilight’s neck. A cascading sensation like nerves doubling over and stroking themselves warmed Twilight’s body, and when she looked again, there was nothing between her thighs but the already weeping flower of her womanhood. Luna slipped her hand under Twilight’s thigh and lifted it, while at the same time scooting her until she was on her back, her legs lewdly spread. Luna, on her knees, interposed herself into the space created by Twilight’s thighs, rendering her unable to bring them together again.

Luna reached down and caressed Twilight’s cheek, making sure her strong and insatiably virile penis could still be seen by the girl beneath her. “In truth,” Luna grinned, “I have wanted you as well. I appreciate your closeness to my sister and thus I allowed that to occur first, but it is now my turn, and I will be the first to feel you from the inside.”

Twilight’s eyes glimmered with the sparkle of midnight. “…y-yes princess—“ She amended, “…M-Misstress Luna…”

Twilight lifted her legs further. Placing her hands on Twilight’s shins, Luna touched her tip to Twilight’s slick blossom and was swallowed almost instantly, Twilight’s channel eager to welcome her and guide her to the deepest of her secrets.

“O-ohh…” Twilight mewled, “…P-princess…M-mistress Luna…”

Luna reveled in the warm, soft sinking sensation until she finally brushed against Twilight’s cervix and could enter no further. She was amused to find that she wasn’t even in all the way, and she made a point of making this fact known.

“Mistress is greater than you,” Luna smirked, brushing Twilight’s sweat-matted bangs from her face. “You see? You can’t even accommodate all of me.” Luna began to move, and Twilight accepted every thrust with gracious, silken hugs for her invader.

“…a-ahh…o-ohh…nghh…”

Luna began to piston, giving rise to squishy smacks of arousal. “Mmh, such a shame my sister is asleep,” She muttered against the sensations, “Now that I know how different you both feel on the inside…i-it would be nice to share that with her…nnhh…”

Twilight did not respond. She hooked her hands under her own thighs just to pull up on her legs, assisting the invasion; her attention on the union with her new mistress.

“…o-oh…P-princess Celestia…” Twilight moaned.

Luna took no offense. Grinning, she merely rubbed the back of her hand over Twilight’s cheek and then planted both hands to either side of her head, leaning over to force the angle and push herself in slightly deeper.

Luna paused to savor the expression of lost bewilderment on Twilight’s face, appreciating how the student could so easily move back and forth between dominance and submission. She would make an excellent ‘middle-ground’ toy, playing the roles of both mistress and pet, and Luna was quite impressed with how Twilight applied her quick study skills even to debauchery. There was a soft shuffling noise – Twilight was too lost in arousal to hear it, but Luna glanced up towards the bedroom door, following the sound.

There in the doorway, mostly obscured by darkness, Celestia stood. Her soft nakedness caught the moonlight, giving her a pale, almost glowing countenance; her supple curves were partially obscured, but only by the wisps of her now disheveled locks as they caressed her form. Her eyes were lidded and her blush was heavy. Hovering somewhere in the horny haze of sleep, her expression spoke volumes to a sister who had known her for so long, and so well. Luna only smiled softly at her elder, but this time, she let her be. Without words, the Moon knew that the Sun had battled her way through exhaustion and gone as far as to feign unconsciousness, simply to enjoy the view of the two people closest to her in her life making love.

The sisters shared a knowing smile. Luna turned her attention back to Twilight, smoothing back her bangs and putting on a good show of it.

“You want my sister for a pet,” Luna whispered, inches from Twilight’s face, “but you are not entirely above being taken either. You would like it if I had my pet do this to you someday, wouldn’t you.”

“A-ah…y-yes…” Twilight tersely agreed, nodding more times than were necessary. Luna’s stare was deep and fathomless.

“Look at me,” She ordered. “Look into the eyes of your Mistress. You’re about to climax, and you’re going to learn to associate that pleasure with thoughts both my sister and me.” At that moment, Luna finally waggled a finger in the direction of the bedroom door. “Sister. Come to me. Come and watch your student lose herself to my seeding.”

Twilight gasped as her eyes fell on the unexpected approach of her mentor. Her eyes were darting around, but she finally met Luna’s gaze. Instantly Twilight’s jaw went slack. She was caught in the rays of the Moon, and her body would allow her no escape until it had been properly seeded. She was paralyzed such that she could do little but bite her lip and hiss out a whimper, even when Luna gifted her with her first female orgasm of the evening.

Celestia squatted, giggled, and reached out to stroke Twilight’s stripes. “It is well, my student. Give yourself to my sister. I want very much to see you in lost to bliss.”

With perfect understanding of Twilight’s body, Luna angled herself to rub against both her button and the roof of her opening at the same time. Luna moved in a series of pausing strokes, gradually drawing her new charge, breath by breath, towards her next spasmodic release. Then she exploded into action, wrapping her fists around Twilight’s wrists and holding her down while she hammered her with reckless abandon.

Twilight squealed and kicked, but her second orgasm took her strength, reducing her to a quiet, quivering, accepting puddle that Luna plowed deep. Holding Twilight firmly in place, Luna began to pump her full of the same sticky ropes that had flowed into her sister twice before, marking both pets as her own.

Luna pushed herself up and shook her head, tousling her starry locks and letting out a breath of relief. She glanced at the fire, still casually moving around a little inside the girl that was pinned below her.

Luna glanced over at Celestia, who was sitting cross-legged on the floor, looking mirthful. “Mmm, I guess we will indeed see if there are any fertility-related affects to this magic, will we not, Sister?”

Celestia’s eyerims were heavy, but the bedroom look they displayed said she still had not reached her limit for the evening. Her movements were slower and more sensual - hampered by sleep, she put the exhaustion to good use and moved with the sublime, careful poise of a lazy cat, crawling on all fours over to her sister. Over the panting form of Twilight, the two sisters shared a lighthearted kiss of greeting. Celestia took Luna’s hand and placed it on her belly, smiling demurely.

“Well shall indeed, little sister.”

With an audible pop, Luna removed herself from Twilight and sat back on her haunches, waving at the hot seed that leaked from between her thighs. “I know what you want, Sister. A good pet always cleans up.”

Giggling again, Celestia favored Twilight with a single glance before slipping between her legs. Lying on the floor, the crown princess pressed her lips and nose to Twilight’s steaming flower and drew in a deep breath of her scent. Finally she nuzzled her student’s opening and began to lap at the deposited seed, teasing Twilight’s button with long, broad licks as she went.

“O-ohh...” Twilight murmured, quivering. “...hahhh...”

As a distant clock tolled four, Luna sat beside the prone form of Twilight Sparkle as it lay on the floor before the fire. Her necklace set aside, Luna lounged in her natural state, stroking Twilight’s head as her sister continued to take her time working at Twilight’s damp, puffy folds. The collar around the student served as her only garment, and it jangled slightly whenever she squirmed.

“Are you happy, my pet?” Luna offered as she stroked Twilight’s mane and watched the fire. Twilight’s head moved in a nod under Luna’s fingertips.

“Yes, Mistress. You have no idea…”

Luna giggled, “I think I might have some, at least. But it is not yet time to retire. This is my hour after all, and the two of you still have time to live in it.” The smile on Luna’s lips glowed honestly in the firelight. “I am very pleased with both of you tonight.”

As Celestia fed to the tune of squishing sounds, Twilight pumped her hips weakly and rolled her eyes, glancing up at the younger sovereign. Luna spoke.

“From now on, Twilight Sparkle, you shall have the most precious gift in all the land. You shall have my sister, to ‘study’ with in a whole new way.” She smoothed Twilight’s sweaty bangs, “But the price is belonging to me.”

Twilight’s grin was lopsided and impaired with lust. “...th-thank you Mistress...f-for sh-sharing your pet with me...studying is going to be so much f-fun now...”

“We have much to discuss,” Luna cooed as her hand slipped down to fondle one of Twilight’s taut nipples. “But there will be time. So much time, for us all to enjoy.”

Content to sit back and enjoy the show, Princess Luna conversed with her old and new charges as they made lazy love - working them into their new roles until just before dawn.

Brand New Studies

Luna held her hand out towards the setting sun.

She stood on a high parapet, the breeze catching and tousling her starry mane and the gown she wore to match. Normally manipulation of the heavenly body of day was not her concern, but she was not above helping out as required. It was the least she could do for entrusting her moon to her sister’s care for nearly a thousand years.

She retracted her gesture, waiting for the sun to complete its dip below the horizon by inertia alone. That orb was somewhat more difficult for her to manipulate, and thus the added attention had been necessary. She waited, giving the sky time to inject itself with the inky dye of night, and smiled appreciatively when her stars began to flare to visible life one by one. Satisfied, she drew the glow of her magic back into her hand, snapped her fingers, and with a spin of her slippers, turned back into her bedroom.

Manipulation of the moon was second nature to Luna. Normally she enjoyed watching it rise – deep somewhere in the private recesses of her mind, the cozy enjoyment of watching the sun slip into hiding was still with her. But there were other matters in hand this night, and soon her regal footsteps were tapping out a rhythm down the cold stone hallways, seeking a source of light and heat. A guard, tired from the mindless toil of his post, straightened with a clattering of armor when she approached.

“What is the hour?” She asked him impatiently. The guard glanced out the window, and quickly covered an expression suggesting he was about to ask his sovereign why she couldn’t look out there herself.

“J-just past dusk Ma’am,” He replied stoically. “May I help you?”

“You are the dayshift keeper of the apartments in this wing?” Luna confirmed.

“Y-yes Ma’am!” The guard snapped to even more rigid attention, feeling the need to elaborate on information Luna certainly had already. “These are the guest apartments for regular or long term VIPs. There is a guard posted at all times.”

Luna waved off the commentary. It was all old news, but she couldn’t help the cool enjoyment of keeping a clearly bored guard on his toes. “Do you know the disposition of Twilight Sparkle? She would be here, yes?”

“Y-yes of course, Your Highness,” The guard stood immediately aside and pointed down the hall. “Second suite on the right, after a left down the third hallway. During shift change I was told she’s having lessons with Princess Celestia tonight.”

Luna’s lip cocked back in a grin. Another piece of information she did not require, but the guard seemed pleased that his job had afforded him at least a cursory bit of privileged knowledge.

“Carry on.”

Luna stepped past the bewildered guard and walked on, until her heel clicks were muffled by the cushy tufts of a receiving rug that graced the private halls. She rapped once on the indicated door, not expecting an answer, and then lit a small glow of magic around her ear. Turning her head to the side, her augmented hearing picked up exactly what she expected, amidst the slip and rustle of satin sheets.

“…nngh…o-ohh…p-princess…”

“…ah, my st-student…ahh…”

Luna could barely contain the chuckle rolling around in her chest. Had the two of them managed to complete even one regular study session since that fateful night? Luna pushed at the door, found it locked, and lit her magic. With a touch the lock released - she swept in with a straight back and commanding glare.

It was much as she had expected. Twilight’s lodgings – smaller and only slightly less palatial than Luna’s own – featured a comfortable, ample bed tucked into a windowed nook rather than a separate room. The table before the hearth was strewn with books of magic and astrology, but Luna could plainly see by the haphazard scattering of papers that a need to copulate had taken both of her pets by surprise this time. She stood, folded her arms, and merely stared at them haughtily, not bothering to drape the portion of her gown that had slipped back to reveal the nakedness of her supple thigh.

Teacher and student found themselves frozen in Luna’s glare. Twilight, stark naked, her nipples pointed in little peaks, had the familiar enchanted necklace draped over her breasts. She was propped up with pillows into a sitting position, and her insatiable penis was standing tall. Celestia was laying next to her on the far side, half propped up into a comfortable position where her lips could access her students’. Her porcelain fingers were wrapped around Twilight’s throbbing length, which was oozing clear rivulets of viscous fluid from its tip. Around Celestia’s neck was her collar, tagged both by the marks of student and sister, and her leash was wrapped around Twilight’s wrist.

Both of them stared, dumbfounded. Luna only laughed.

“Do not even try to make excuses,” She said heartily. “Both of you are well aware that a weak lock spell such as what was on that door would keep staff out, but would have been easy for me to penetrate. Do not patronize me by feigning surprise.”

Teacher and student glanced at each other. Neither spoke, but Luna could see the resignation in their eyes - it simmered around the edges with rapt excitement for their mistress’s ‘intrusion’.

Luna shook her head, clucked her tongue, and with a sweeping movement, yanked the clasp from her belt and allowed her gown to melt away, exposing her in as much nudity as her companions. “Twilight Sparkle, you are still lax in your lessons,” She declared simply.

Twilight swallowed and glanced at the table, “I…I am? B-but,” she sputtered, “we just finished analyzing Starswirl’s forty-fifth theorem on supernatural relativity, and I even memorized the first eight stanzas of his treatise on paranormal mechanics...”

Luna closed the distance to the bed and reached out to lightly stroke Twilight’s chin. “Not your day lessons. Those of the night. Those of my time.” Without looking at her sister, Luna barked out a sharp order. “Heel.”

Celestia came to life immediately. Removing her hand from Twilight’s spire, she got up on her knees, rested her palms down on her thighs, and straightened her back into a rigidity that would have been the pride of any palace guard. Luna waited until the move was completed to favor her sister with an appraising gaze.

“Though I must admit,” Luna continued,“one of the effects of your time with my sister-slut is both unexpected and delightful.” Without waiting for Twilight to ask, she elaborated, “My pet’s obedience has drastically improved under you. Oh, she still voices her complaints about sleep now and then, but a hand on her back sees her straight to her room and then her bed before she even completes the sour words.” Luna reached out to pinch one of Celestia’s stiff nipples and yank on it. “Isn’t that right, Pet?”

Celestia whimpered, but did not shy away from the assault. She blushed and pushed her chest out a bit more. “…yes Mistress.”

Twilight’s smile was warm. She reached out to stroke one of Celestia’s thighs. Luna raised a brow.

“You see?” Luna commented.“That is precisely what I am talking about.”

Twilight glanced at her own hand, then at Luna. “…what is?”

Luna sunk her rump onto the edge of the bed, crossing her legs over the side, and took Twilight by the chin. Without warning Luna placed her hand on Twilight’s erection and lightly stroked it, while reaching in to claim the student’s lips. The kiss was chaste and brief, but Luna held to the slowness of the movements, and when she pulled back, Twilight’s eyes were hazy.

“You want your teacher to be as happy as possible, don’t you, my other pet?” Luna asked, inches from Twilight’s face.

“…y-yes…v-very much…” Twilight appended, “…Mistress…”

“And you want to experience the greatest heights of bliss, while sharing them with your teacher, lover, and pet, do you not?”

Twilight’s thighs rubbed together, her penis twitching again in Luna’s slack grasp. “…yes of course…”

Luna caressed Twilight’s cheek and angled her face towards Celestia. The Sun was just kneeling there on the bed, trying her best to look demure while maintaining a guard’s posture.

“What is that around my sister’s neck, Pet?”

“…a collar…” Twilight whispered.

“And what is on it?”

“Y-your mark…”

“And?”

“…and my mark…”

Luna drew her lips to Twilight’s ear. She nibbled on the lobe and whispered into it, teasing Twilight’s tip with light touches as she kept her attention on Celestia’s silent, patiently watching form.

“You were letting her use her hands, weren’t you,” Luna cooed. Twilight swallowed.

“…yes…”

Luna made a tsk-ing noise. “You could be sharing much more with her. My sister is weary under the burden of her station for so many millennia.” Luna kept the touches going as she explained, focusing on the gradual, heavier rising and falling of Twilight’s breasts. “She looks to me to put her in her place – to make her a proper whore and slutty pet, who only obeys and has no responsibilities other than to perform under me.” Luna softened to a whisper-

“…now, she looks to you for that too. Her little sister, and her student. She wants us to be her betters, as we know we are.”

Luna turned sharply to look at Celestia. “Arouse yourself, Pet.”

Celestia didn’t hesitate. She parted her thighs, slipping a hand down to the already damp flower between them. Massaging her own button, she began to masturbate herself, squeezing at each of her own breasts until her lazy nipples stood firm again. Luna slid to a corner of the bed, but not before taking Twilight’s hand and placing it on her own length, making her stroke herself until the hand moved on its own.

“Now,” Luna grinned, “We are going to have a lesson. Watch each other.”

Celestia and Twilight, who were each touching themselves, watched the other do so. One stroked a penis while the other dug at a vaginal opening, but both of them moved their free hands over their breasts with an almost synchronized approach, touching themselves in time with the movements of the other. Luna waited until each of them were silent save for telltale gasps of desire.

“Pet,” Luna said calmly. “Where does your Mistress belong?”

“Inside me, Mistress,” Celestia responded instantly.

Luna made sure Celestia could see the look of disapproval she flashed. “Is that where you were placing Mistress Twilight before?”

“…no…”

Luna nodded, stroking Twilight’s distracted head. “Correct it then. For her pleasure, not yours.”

Celestia nodded. Taking her hands from herself, she collected her lithe curves and slunk down between Twilight’s legs, stroking her student’s thighs, hips, and rump. Luna placed her hand on Twilight’s hand and pulled it away from her erection, just as Celestia began to lick Twilight’s foreskin like a dog.

“O-ohh—” Twilight moaned. Luna made a shushing noise.

“Do not make your arousal so obvious in front of your pet,” Luna instructed. “Make her work for it.”

Twilight bit her lip and quieted, but she lacked Luna’s control, and thus her desire manifested as quivers in her shoulders and hips instead. Slowly Celestia enveloped Twilight’s tapered head, tightening her lips such that Twilight felt as it she was piercing a virgin hole.

“Nngh…”

Luna put a staying hand on Twilight’s chest. “Your pet is pleasuring you. This is what she is for. Do you want more?”

“Yes…”

“Do you want it now?” Luna continued.

“…y-yes, ahh…”

“Then what are you waiting for?” Luna lifted Twilight’s hand and placed it on Celestia’s head. “She is slow. Performing badly. Correct her. She will not be upset by it.”

Twilight pushed another dollop of clear pre-seed into Celestia’s mouth. She watched the crown princess carefully tracing each of the veins of her penis as she went slowly down.

In that moment, it occurred to Twilight that Luna was right.

Twilight’s eyes narrowed. Her fist closed around Celestia’s pastel locks, and she yanked as hard as she could, eliciting a whine from the princess.

“Faster,” Twilight squeaked. “…deeper!”

Celestia pushed herself down, swallowing to the halfway point before the sudden piercing of her palette caught up with her. Inadvertently she let out a gagging noise, but she fought the reflex and gave herself to the hunger of obedient lust.

Luna snerked. “I wouldn’t put up with weakness like that if I were you, ‘Mistress Twilight’.”

Twilight yanked herself further up into a sitting position. She reached out and placed her hand firmly atop Celestia’s head. She then pressed down, obliging her teacher to bear the weight while forcing her to accept more and more of her Mistress’s penis down her throat.

“..nglk…nnmmnk—“ Celestia’s reflexes complained, but she opened her eyes and offered Twilight a look that spoke volumes.There with her student’s hand on her head, and penis deep in her mouth, the Sun Princess signaled that the last thing she wanted was to be let up for air.

Twilight’s grin went wicked. She pushed until Celestia’s nose was brushing her abdomen, and watched as her teacher choked slightly - filling herself with her student’s alluring scent. Twilight relaxed her arm slightly to allow her teacher room to bob, but kept her to a certain ceiling, not letting her pull her head back too far.

“S-swallow it,” Twilight fought through the bliss to issue commands, “S-swallow me down, s-slut…” She tasted the word on her lips as though it were a new flavor of ice cream. “You’re not getting up until m-my seed is…down in your tummy…”

“Thaaat’s better,” Luna sat on her haunches and smiled, casually watching the lovers mate again. “You must not be afraid to be a leader, Twilight Sparkle. Your pet is a beast of burden, such as…” Luna thought about it and brightened, “Such as a horse or a pony. If you would call others to your banner and lead them, you must be able to control this creature of yours while giving her exactly what she wants at the same time. You are her subject, her student, her mistress, and her lover.”

“Ngh…” Twilight continued to control the bobbing, thrusting Celestia’s head down roughly over and over, “…hahh…I-I’m the m-mistress…s-serve me p-pet…nnghh…”

Luna went on, “She is your steed. Her gagging is just the wild bucking of an untamed pony. Mount her. Ride her. Break her in.” She began to stroke Twilight’s soft raspberry stripes again, feeling the perspiration clear through them. “I will be your teacher – your guide. I will show you how to get the most of your pet, while making her glow with adoration every moment she is in your presence.”

Twilight felt…powerful. She pulsed again, feeding more pre-ejaculate into her pet, but Celestia’s swirling tongue, warm cheeks, and desperation to perform were quickly pushing her to the edge. The moment she was starting to understand was fast approaching – that instant where breeding males were forced to pause and instinctively pierce their host to the core, to provide the best chance for insemination.

A shock went off in Twilight’s brain, and somewhere in the haze of passion, a single moment of crystal clarity graced her complicated, studious mind. Cracking her eyelids, her dim gaze fell on Princess Celestia – the sovereign who had been her mentor, her guide, and her closest confidant, in times both good and bad. She was the one Twilight felt she could share anything with, even moreso than with her own brother or her parents. Despite that, it occurred to Twilight how many nights she had spent desperately petting herself to the thought of her mentor doing…exactly what she was doing, right that very moment. She couldn’t remember a time in her life, past the age where she could understand, that the latent desire for her teacher’s love hadn’t meant something more to her.

And now, here she was.

Twilight gazed weakly at the leash wrapped around her neck, and the mark on her pet’s collar that branded her property. She yanked on it, just to see Celestia’s rhythm break...the Sun’s eyes remained averted, but somehow, despite her toil, Twilight could see Celestia’s cheeks brighten in a smile. Teacher and student, exploring a new subject, were both filled with the promise of the intimacy of the future. Twilight could feel the waves of elation scorch her nerves like lightning. Her penis became the focal point of her entire body, and the pleasure from her teacher, teasing her veins and swallowing her deep, became her whole world.

Her eyes opening wide, Twilight pulled her hand off of Celestia, sat up straight, and grabbed the sides of the Sun’s head roughly, clamping and forcing Celestia down to the hilt. All movement ceased save for the churning in Twilight’s core. She cried out, threw her head back, and bucked her hips in Celestia’s face, wildly coating her teacher’s insides with rope after rope of steaming semen.

Celestia’s eyes snapped shut. She let out a whimper, followed by a gagging noise in response to the force behind her student’s insistence. She knew little of the magic that had created Twilight’s organ, but suffice to say, she was becoming used to the idea that every eruption from it was as though it had been throbbing with need for weeks. With every pulse of Twilight’s girth, another batch of creamy warmth flooded Celestia’s throat. She thrashed slightly at first, but eventually found her stride, tucking Twilight’s tip deep into the back of her throat and milking her student’s veiny shaft for all it had to offer.

When Twilight felt as though she had emptied her entire body into the cozy receptacle, she collapsed on her back. Her hand found the leash she hadn’t even realized she’d lost hold of somewhere in the throes of passion - she gripped it and yanked, staying Celestia’s head and forcing her back down.

“…sw-swallow Pet…” Twilight panted, her chest pumping furiously, “…swallow it all down and Mistress will let you up…n-no enjoying the taste…y-you were bad earlier…”

Luna raised a brow and grinned. Twilight was indeed a fast learner. Luna didn’t even need to encourage her to penetrate as deeply as she could, to deny Celestia the joy of the taste on her tongue as a response for being too slow before.

At length the swallowing ceased. Twilight’s hold on the leash slackened, and Celestia sat up on her knees, wheezing out a breath and blinking as though she had just been underwater. Luna came up behind her sister and took to massaging her shoulders.

“Shhh,” Luna cooed, “you made amends for your mistake admirably. Your Mistresses are both proud of you.”

Twilight nodded her agreement weakly, without getting up. Celestia beamed, brightening.

“…oh thank you Mistresses…”

Luna took her time, favoring her sister with a relaxing rub out of her tension. Eventually she patted her sister’s rump and spoke. “You must be tired, it has been a long day. I have some duties to attend to tonight. You will sleep with your other Mistress.” As Luna spoke, she lowered her sister’s body to its side next to Twilight, who was sprawled on her back and already dozing.

“Sleep with your Mistress,” Luna repeated, “And take some time before your busy day as a princess tomorrow to pleasure her awake. It will put a spring in your step for the rest of the day.”

Celestia smiled warmly, tousling the bangs of her mostly unconscious student. “I will, Mistress.” She glanced at Luna out of the corner of her eye, adding-

“…thank you, little sister.”

Luna slipped off the bed and retrieved her gown. “There is no need to say it. You know I love you very much. You will always have this release, my dear sister, so long as I can help it.”

A full minute later, Luna closed the door on the two lovers, clicking the magic lock shut on their somber, sleeping smiles.

Taking the Moon

Like the incessant scurrying of a shrew within a thin wall, a series of light footsteps beat out a hasty rhythm down the cold stone halls of Canterlot palace. The echo created by their melody swelled and contracted as their owner passed between tower passages and open breezeways, on her way to a place that few citizens of Equestria would ever see. Each guard she passed offered but a cursory nod, as they stood at tall attention alongside the very stars that seemed to line up like runway lights to guide her to her destination.

Despite the hot, wet heat of high summertime that seemed to give no quarter even in the dark of night, Twilight Sparkle shivered. The humidity clung to the cotton of her yellow pajama top; seeping in to create a clammy sheen around her modest breasts that trailed all the way down the swell of her hips to the soft secrets of her inner thighs.

The ease with which Twilight traipsed about the royal apartments in nothing but her bedclothes was not lost on her. There had been a time, just three short months ago, where she would have skulked instead. Now her presence in the royal chambers of the Sun and the Moon was so commonplace, Twilight thought nothing of it. Even the volcanic blush that used to erupt upon her cheeks whenever a handmaiden’s eyes followed her too long on the way to Princess Celestia’s rooms had cooked down to a vague, warm burn.

In the sky hung Luna’s grace, bright and resplendent against the backdrop of night. Twilight paused only long enough to glance at it before disappearing again into another high tower, her taps becoming tufts as her slippers found a red receiving carpet. It was the Moon’s time, and it was in response to Luna’s summons that Twilight passed by her teacher’s rooms without a second thought. It had been a particularly long day for Celestia at court, and Twilight had already resolved to spare her teacher the promise of another ‘lesson’ for the evening. All the same, Twilight found that she couldn’t help the upward tug of her lip that graced her features when she passed by the seal of the sun on Celestia’s main chamber door. The months had been kind, and under Luna’s guidance, both Twilight and Celestia had lived a dream neither had before dared to consider a possibility - the dream that put them in one another’s arms. Since then the pair had shared Celestia’s bed at every opportunity that their schedules allowed. Tonight however, Twilight had taken pity on her teacher-turned-pet. Celestia would sleep unimpeded. Instead, Twilight smiled amicably at Celestia’s guards and embarked upon a series of myriad twists and turns that would take her to Luna’s chambers.

The over-complicated route was as familiar as the lack of windows and increased need for sconces the deeper Twilight went. Luna’s actual rooms were better lit, but Canterlot Palace had been constructed without any input from the then-imprisoned Princess of the Night. Celestia had not wanted to make it obvious to the people of the time that she prayed for her sister to return someday, thus, she had come up with some excuse to increase the private apartment space by declaring it necessary for storage. Some ancient architect had taken her too literally, and the result was a space that felt more constrained than it actually was. Luna’s quarters rarely required a guard however, and the dark princess didn’t seem to mind the intimidating effect.

Twilight turned her knuckles to Luna’s door and rapped lightly upon it. There was no response, but Princess Celestia’s star pupil expected that. It was Luna’s habit not to trifle with formality when she was expecting company. Knowing the door would not be locked, Twilight touched her palm to it and gently pushed her way into Princess Luna’s boudoir.

Within, everything was as Twilight remembered it. Luna’s apartments were a series of open rooms that revolved around a circular chamber, ironically like planets around a sun. The ceiling of the turret that comprised most of her living space was covered in skylights; ringed on the far wall by a series of tall windows. During the day a special series of thick curtains could be slid into place to blot out the sun. The pulley system required to operate them was complex, but the menial duty was still appropriate for an attentive servant. In the evening the curtains were always drawn, and the countryside could be seen all the way to its horizon - even Cloudsdale was visible in the distance. By night, the chamber became a fantastic lunar observatory. The princess herself had ordered these modifications to her living space, and Twilight sometimes wondered if perhaps the view made Luna feel more at home since her captivity.

The decor was no less lavish. Posh couches of velvet and mahogany, tables and chairs boasting exquisite carpentry from one end of Equestria to another, and thick, heavy carpets that were so soft, Twilight instinctively removed her slippers just to enjoy the tickle as they danced under the soles of her feet. Luna’s exotic rugs were more than sufficient for laying upon, whether in the throes of the arms of a princess, or simply a good book.

There, poised at the farthest point in the room away from the entrance, was the erect form of the Princess of the Night. Luna was turned towards the windows; watching some far off point in the heavens as her midnight locks danced with the fathomless sparkle of the dark sky. The only thing her outfit had in common with Twilight’s is that it was also cut in the form of a pajama top and bottoms. Beyond that, her clothes were a finely spun satin of midnight blue to match her hair, trimmed in black such that only a small patch of her creamy neck and the back of her heels broke up the veil of darkness that spread over her from head to ankle. Her entire body seemed to glow with the radiance of the gibbous moon. She spoke, addressing her visitor without so much as a nod of acknowledgement.

“Twilight Sparkle. Good evening.”

Twilight had been through this sort of aloof reception into Luna’s parlor a hundred times before, but she felt herself swallowing through a lump in her throat anyway. She dug her toe into the carpeting, twisting her foot in place as she offered a reply.

“Y-your Highness…? You asked for me?”

Twilight could not see Luna’s face, but she could hear the sharp exhale of a smirk.

“Student of my sister,” Luna stated evenly, “I expect nothing less than to be addressed with proper respect at court, but surely we’ve grown past that point in private.”

Twilight tilted her head and tried again. “Y-yes...Luna.” She stepped further into the room, her footfalls muted by the rugs, and favored the sky with a glance of her own. “It’s beautiful out tonight. Clear and bright.”

“It will be brighter still soon,” Luna replied, arms folded under her breasts. “It will be a few more days before the moon swells to its full potential. My sister’s daylight plays an important role in our society and I respect that, but I have always found the light of the moon to be so much less...harsh. The sun demands your respect, but if you attempt to look upon it you will find yourself struck blind.” Finally she turned, and Twilight could see the glow caress Luna’s cheek. “The moon is sensual. It bathes you in its glow and bears you off quietly, like a lover to a secret rendezvous.”

Twilight felt herself blush again. “That’s very eloquent,” she replied simply. She found she had little else to say, so she merely stared at her sovereign, appreciating Luna’s poetic visage as much as her words. The raised platform upon which Luna stood was only two narrow steps from Twilight’s elevation, but it might as well have been a royal dais.

“Perhaps I have erred in how I have addressed you,” Luna smiled. She stepped down from her perch and approached Twilight. When she was close enough she slipped her hand under the smaller woman’s chin and stroked it once, encouraging Twilight to look up without applying force. “You are as much my student now as you are that of my sister.”

“Y-yes…m-ma-am.”

Luna let go, found the nearest couch, and sprawled out upon it like a spider lounging in her own web - the toes of one foot brushed the carpet while her other leg was draped across the cushion next to her. “Certainly you are wondering why I called you here. If I wanted the usual from you, doubtless I would have requested you bring my sister in tow, or appear with the collar that bears my mark.”

Twilight nodded. “Then, you didn’t want…?”

Luna laughed. “I have trained you both well, it seems. But no, tonight I will not ask that of you. As your day ends, mine has but begun, and I have considerable duties to attend to in short order this evening. You are here only so that we might exchange brief words, so listen well.”

If Twilight had ears that could perk, she would have done just that. She sat on the edge of the couch quite properly, hands in her lap; her long hair freely draped over her shoulders and down her back. Luna went on.

“As I have said Twilight Sparkle, you are now as much my student as you are my sister’s, even if your lessons with me are of a far different nature. Simply put, I have decided you are ready for your final exam.”

Twilight couldn’t help but widen her eyes with excitement. The word that used to strike fear into her classmates long ago was always inspiring to her; a chance to show her professors how brightly she could shine. “A test?”

“Correct,” Luna affirmed. “But do not be so quick to picture yourself wearing a mortarboard. The test I have planned for you has nothing to do with the training of my sister.”

Twilight wrinkled her nose, genuinely surprised. “It...doesn’t?”

“Indeed.” Luna waved a hand casually in the air, and a glass of water floated into it from a table across the room. She sipped, allowing the idea to sink in before continuing. “You have shown me that you can handle the domination that my sister so earnestly desires. But I wonder, can you dominate...me?”

Twilight was at a loss, and she began to babble. “M-me? Dominate you? A-are you even into that?”

Luna chuckled again, waving the glass away when she finished with it. “I cannot answer that question my student, for it will be among those on your test. You have impressed me to this point without fail, as I knew you would. But I must know if you can truly see to my sister’s needs, even without my influence behind you.”

Twilight looked concerned. “Princess Luna…? Are you going away?”

To this, Luna offered a wan smile. She glanced towards her windows again, up at the high moon. “It is not my intention to leave my sister’s side ever again, but you must understand that my responsibilities are quite different from hers. I cannot always see to the peace of Equestria’s night by roaming the dreams of her citizens from a comfortable room in a posh capital city. The times in which my sister needs me the most are often in conflict with the times that the rest of the nation requires me as well.” Luna took a breath, “There is that, and there is also the fact that what I once was will always be a part of me. I have learned to control it and I understand the value of my life better now, but that does not mean that Nightmare Moon will never look down upon us again. Should that ever happen…my sister must never again be so alone as she was for a thousand years. Do you understand?”

“Probably not, honestly,” Twilight admitted. “But I know how I would feel if what happened between you happened between my brother and me.” She reached out and gently placed a hand on Luna’s thigh. “I admit this was the last thing I thought I would be tested on. But I’ll do my best.”

Luna eyed the hand as though she intended to burn it with her gaze alone. Twilight removed it, and Luna raised a brow. “You are correct. You cannot fully understand what transpired a millennium ago. Thus, I am concerned that a mere promise of ‘doing your best’ may not be sufficient.”

Before Twilight could protest, Luna sat up and captured her student’s entire body in a spell. Twilight found herself sitting on the couch between Luna’s legs, her back pressed against the swell of the night princess’s breasts. Luna’s hands came around, and she began to draw her fingertips along Twilight’s thigh. Casually, as if she owned it, Luna’s fingers slipped past the waistband of Twilight’s pants and found the student’s nubile womanhood. They tested Twilight’s soft pussy lips, until two found a cozy avenue to slip inside.

“Acumen aside, you must be invested in a task like this in order to succeed at it. Thus, I offer you an incentive.”

Twilight swallowed, letting out a nearly inaudible gasp as she felt Luna’s fingertips disappear nonchalantly into the folds of her pajama bottoms. “...i-incentive…?”

Luna touched a finger to Twilight’s lips to silence her. “If you can sufficiently bring me to your heel before the next full moon subsides, I shall release my sister to your independant care for one full week. Until now you have controlled her under my eye, but I will allow you the privilege of taking her away from here - to your library, or wherever you choose to go.” Luna’s fingers moved, and soon she was stroking Twilight’s hair as her other hand kept up the special caress. “Imagine having your teacher there to service you orally as you enjoy your latest chosen tome of knowledge, or nonchalantly claiming her womanhood as you delve into your next experiment.”

Befuddled by mental imagery, Twilight felt a stirring within her that soon wetted the tips of Luna’s fingers as they probed. Twilight attempted to deflect. “I...Spike is my assistant though…”

Luna snorted. “Spike is not my sister. I suspect you would pursue a different kind of ‘assistance’ from she who would wait upon you with a silver tray and a cup of your favorite tea, clad in nothing but a collar bearing your mark. Further I suppose that unlike him, you would expect her to stand by and wait to pleasure you at your command, and you would truly punish her for any teasing she may have made you suffer through over the years, while you stood outside a door and watched her enjoy private time with her sister.”

Twilight let out a deep breath. She closed her eyes, and as the images Luna planted in her mind began to dance, Twilight’s words came out as if they belonged to somebody else.

“I won’t let you down. You’ll see. I’ll...I’ll make you mine, Princess Luna.”

Luna took her hands away. She moved Twilight, this time by more mundane means, and rose from the couch. “See that you do. I must begin my duties for the evening. You are not a nocturnal creature as I am, so I dismiss you now to your rest.”

Twilight tried not to let her disappointment over the abrupt end of her sovereign’s touch show. She was already at the door before Luna spoke again.

“You have your work cut out for you, Twilight Sparkle. Know that if you fail me, there will never be a time where my sister will be fully ‘yours’. I will always hold your power over her in check.”

Twilight clenched her fist as she disappeared down the dark halls on her way to bed. Failure was not an option.

* * * * *

Princess Luna watched the sky.

It had been the third time that evening that she found herself distracted from a steaming mug of jasmine green tea by some noise she couldn’t place. This time, the ruckus was the fault of a cricket that had chanced upon the sill of one of her many chamber windows; intent perhaps upon regaling her with a tune that should have been familiar. Luna might have incinerated the insect with her stare alone for its impudence, but she knew that it was not the cricket’s fault. Its song was a song of the night, and yet Luna had not only failed to recognize it, but allowed herself to be spooked by it. The cricket reflected her scowl back at her across its carapace, and she turned away in disgust at the sight of herself.

“Tch, Princess of the Night indeed,” Luna muttered aloud. “The very idea, for one such as I to be placed on alert by a creature of my own disposition.”

Luna stepped down into her living space, took up her tea, and squinted at it. Cold. Too many distractions. Annoyed, she let out a sigh and sat the cup back down, preferring instead to pace around the room. Her duties on this particular night were thankfully light, and she had made short work of them a mere three hours after sunset. Now the full moon hung high above, bathing her room in its comforting light, but Luna found little solace in it. Chewing on her bottom lip, she stared up at her heavenly orb and spoke to it.

“Over a week,” She told it. “I have given Twilight Sparkle until the first veil of darkness alters your shape again to complete her test. Even now I can sense how the light from my sister’s sun is preparing to change you. When we stand here again on the morrow, the ‘star’ student will have failed without so much as an attempt.”

Luna paused before the cup, this time tracing her finger around its rim. She was disappointed that her sister’s progeny had apparently met her match, such that she was not even willing to try. Part of Luna was dismayed that she could not place as much trust in Twilight Sparkle as she had hoped, but another part was unexpectedly agitated.

Luna glanced in a nearby mirror. Her duties complete for the evening, she had shunned her formal wear soon after returning to her room. Now, her starry locks held court over a body dressed again for sleep, merely because Luna found bedclothes comfortable. The lilac nightie strapped to her shoulders was formless, but the portion of it that ran from just under her breasts to the hem at her upper thigh was sheer, leaving little of her midriff to the imagination. It drew taut across her ample bust, marking her valley with a tiny sanguine bow. Beneath, the shadow of her hourglass hips bore matching panties that were so slight, she could barely feel them. The outfit was too effeminate to be something she would have acquired on her own, but her sister was kind with gift-giving, and Luna appreciated the gesture. It was sufficient for private relaxation and quite comfortable, though she might not have admitted openly to either point.

But Luna wasn’t looking at her clothes. It was her posture that drew her eye, and she took note of her square shoulders and rigid back. She was tired - moreso than she should have been - and there was a clear culprit for her condition that she hadn’t wanted to admit to herself.

Luna was feeling edgy. Twilight Sparkle never gave up on a test. And there was only one day left.

“No, Twilight Sparkle. You would not give up without a fight. Even if you stand little chance of success. If you are to succeed, you will doubtless act tonight.”

With a disdainful sniff, Luna turned sharply away from the mirror. Her bare feet slapping against stone, she strode with purpose through her private halls to the subtle chamber that contained her bed. Unlike her living space, this small room had but one tiny window, and the light was supported only by a candelabra that she herself had magically enhanced never to require maintenance. There was something about allowing even trusted handmaidens into the most private corner of her abode - a throwback to ancient times where she had been walked in on once too often while exploring her own blossoming femininity.

Luna gave her bed the eye. With a flick of her magic, the sheets parted for her, and she found her place between them. She spoke aloud to herself, as though voicing the justification for her intended actions would be enough to deflect the shame.

“Your student would not give up, my sister,” Luna muttered as she reached for her sleep mask. “But her time is running out, and if she spoke to anyone of her plans, it would be you. I have given you my word that I would never trifle with Twilight Sparkle’s dreams, and I shall abide by that. Your dreams, however, are the proverbial horse of a different color.”

It was the perfect plan for a princess who needed a reason not to leave well enough alone. Celestia’s mind was better organized than the majority of Equestrian citizens, but Luna was the epitome of dream-perusal. It would be a trifle to observe even her sister’s dreams undetected. With a grin, Luna slipped the mask over her eyes and lay prone. She had no intention of sleeping, but her magic functioned more efficiently while cast under a combination of physical comfort and sensory-deprivation. Luna didn’t want to miss one iota of detail.

Princess Luna had gotten over the disorientation that came with passing along dreamscape highways a millennium ago. Celestia was apparently as fast asleep as she should have been at that hour, and her boulevarde was no more challenging to traverse than any in Canterlot. Soon, Luna felt the soft dirt paths of Ponyville under her bare feet. Noting her current state of dress, she snorted and summoned up the regal robes and slippers she normally wore to court. This may not be her dream, but it was her realm. In the turning of a second her form was nicely encased in modest finery, complete with a dark crown upon her brow.

“Well hello Miss!” A snarky male voice trumpeted. “Care to sample some of our delicious lemonade? Freshly squeezed!”

“You won’t find it’s like anywhere in Equestria,” another male voice, this one slightly huskier, added. “Straight from Sweet Artichoke Acres to you!”

Luna turned to find a small lemonade stand by the side of the road. Staffing it were two youths that Luna knew well for the number of times she had quelled their anxious dreams. Scootaloo and Sweetie Belle were dressed like two members of a barbershop quartet; the former brandished a megaphone, while the latter sported a thick handlebar mustache. They called to her again, in heavy male voices that reminded Luna of a certain pair of nefarious business brothers. Luna approached, playing along with the dream as she was used to doing.

“If you say your potion comes from lemons, how were you able to obtain it from a place known for artichokes?”

Scootaloo shouted unnecessarily through the megaphone, “Madame Princess! Everybody knows the answer to that!”

Sweetie Belle finished the thought, twirling her flaxen mustache as she announced, “It’s because it’s a wonderful day, the birds are shining, the sun is singing, and the flowers are in bloom!”

Luna noticed that much of the town had suddenly transformed into a huge field of tall sunflowers. It was somewhat bizarre to watch the citizens go about their business as though their vendor carts and homes had not spontaneously become flora, but the sky was a clear blue, the air was warm, and the view was indeed just as beautiful as the day.

Too beautiful, as a matter of fact.

After receiving a slice of pizza and a rutabaga that a certain wall-eyed young lady had produced from a muffin basket, Luna went about an investigation fraught with suspicion. There was no obvious hint of Twilight’s plan (assuming she had made a plan at all, or spoken of it to Celestia), but something about the perfect weather and the excessively bright smile on every face just wasn’t adding up. There was nothing in this dream that said ‘Celestia’ - particularly the location, which placed the city of Canterlot on a high mountain cliff, purposefully far away. On a hunch Luna approached another child she knew, who was selling produce to local citizens by merely ripping leaves off of a grove of sunflowers that had once been a cart.

Apple Bloom, clad in the full armor of a solar guard with an oversized helmet, smiled brightly. “Well hello there, Princess Luna! Can I getcha a nice watermelon? Or maybe some electrolysis?”

Luna eyed the sunflower leaf that Apple Bloom held eagerly out to her. Luna was no amateur at interpreting dreams, and the implication that she should take it and move ignorantly along was obvious. She held up a hand, politely refusing Celestia’s attempt to force her sister to capitulate to the dream imagery.

“Tell me, Apple Bloom,” Luna smiled wickedly. “Have you heard any interesting rumors lately?”

Apple Bloom merely pointed to the center of town. There, Luna found noted fashion photographer Photo Finish in a scuffle with two people Luna recognized as Rarity and Hoity Toity, both of whom were clad like explorers from a Daring Do novel.

“Ach!” Photo Finish complained. “You vill unhand me zis eeinstant! I haff important information for zee princess!”

“Certainly not darling,” Rarity replied. “Why don’t you just have a nice cup of hot cocoa and enjoy the blistering afternoon? Why, it’s simply lovely for the complexion, don’t you think?”

Luna held her arms akimbo and took on the royal voice. “Enough!” She shouted, immediately turning all attention to her. “Unhand that photographer!”

Stunned into silence, Photo Finish’s assailants let her go. She scampered over to Luna, beaming with pride. “Ah yes, zis is the perfects! For savingk my extravagant self, I give to you...de magicks!” She produced a simple manilla file folder from nowhere, dropped it into Luna’s waiting grasp, and fled before the princess of the night could speak another word. “I go!!”

Luna waved her hand, and in an instant, the dream imagery was little more than syrupy blobs of color, as though she was viewing the citizens of Ponyville from the other side of a window in a driving rain. Noises faded away, and Luna grinned as she calmly perused a dossier of her sister’s protected thoughts.

“Planning to call me to your room this evening and accost me as a pair, are you?” Luna clicked her tongue. “Pragmatic dear sister, and I appreciate your ability to feign a truly deep sleep, but utterly futile. Your attempt to keep me from this information was spirited as well, as it seems you knew I would try. But you forget who you are dealing with. Dreams are my domain. In this landscape, no secret can be kept from me.” Luna flipped the file folder closed and discarded it, it’s disgorged secrets no longer of any use. “Now we shall put an end to this, and you, Twilight Sparkle, will will receive a midnight snack of my seed as your penance for failure, every night until you are so used to worshipping me, the thought of my grace will dominate every waking moment, and follow you into your dreams.”

With that Luna ended the spell, and brought herself out of the funk of half-sleep. It was not necessary for her to sink into the same level of unconsciousness as the dreamers she visited - on the contrary, it was essential that she didn’t, to avoid having her own dream imagery distort what she was perceiving from her target. Thus she could still sense the waking world around her, but perceiving two landscapes on top of one another was sometimes disorienting. Thus, she often preferred to find a safe, secure place to do her dreamwalking, so keeping her attention on the outside world would not be necessary. The strategy had never failed her.

Not before tonight, at any rate.

The sensation of sudden immobilization spun the cranks of Luna’s mind from a lazy return to consciousness all the way up to high alert. Demons assaulted her thoughts, insisting to her that the entire palace had fallen prey to a coups d'etat. She thrashed, but found herself securely bound to the posts of her canopy bed by a quartet of colorful silken sashes, wrapped over themselves several times to serve as strong, convenient bonds. Lying prone and spread-eagle on her back, Luna instantly lit the invisible glow of her magic, detectable only by those who were attuned to it until she was ready to unleash her wrath.

“Wait!”

The voice was familiar enough to stay Luna’s intended assault upon her own wrists and ankles. Eyes wide with alarm, she jerked her head until her gaze fell upon the smug grin of Twilight Sparkle, casually perched at Luna’s side. The pajamas Luna had last seen her student in had been replaced by an ensemble worthy of Twilight’s final exam. Though her bustline was more modest than either princess, Twilight’s jet black corset captured the swell of her breasts and hips, making her appear almost as ample as Luna in the bosom. Twilight’s top stopped short enough to easily make out the matching panties beneath and a swathe of creamy white skin between each garment, but it was otherwise opaque throughout, making Luna feel somehow more exposed. Twilight’s hair was gathered in a loose tail that had been flung over her shoulder, her raspberry stripes spilling down the pool of her collarbone and spanning out across her left breast. In her fingers Twilight spun a small metallic object, and her attention was focused entirely on Luna.

Princess Luna did her best to stifle her surprise. Realizing that her kingdom was not about to be conquered, she raised a brow and tried to appear nonchalant. “Twilight Sparkle. To what do I owe this intrusion into my private domain?”

Twilight rudely turned her attention to the window and continued to flip the small cylindrical object between her thumb and index finger. “I think you know.”

Luna pushed a condescending laugh through her lungs and spoke on the cusp of it. “If what you are holding is what I think it is, then you have erred, student of my sister. As it stands, I can break these bonds with little effort. You ought to have contained my power when you had the chance.”

Twilight poised the ring she was holding on the tip of her finger and examined it with a coy expression. Luna didn’t have to ask what it was, for the ring bore the exact same silver and platinum setting as the one she often used to suppress her own sister’s magic. The only difference was that this particular ring bore an embossed relief of Twilight’s mark.

Twilight appeared quite calm, which was more than she could say for her sovereign. “You’re so tense, Princess Luna,” Twilight pointed out. “As tense as somebody who was planning to get out of bed quickly and found that they can’t. Where were you off to in such a rush?”

“I think you know,” Luna threw Twilight’s reply back at her. Twilight only nodded.

“Mmhmm, mmhmm. So how come I’m here, and not in Princess Celestia’s room waiting for you?”

Luna opened her mouth and shut it again. Realization struck her, and her eyes widened once more. “...it was a ruse…”

“Mmhmm!” Twilight nodded cheerfully, finally turning her attention back to the bed. “You’re right, I could have just put this ring on you while you were out of it, but you always give Princess Celestia a choice, don’t you?”

Luna wasn’t listening. “How...but...my sister lacks the skill to overcome me in a dream...as do you. How could you have…?”

Twilight smiled. “Oh, we didn’t overcome you. Princess Celestia doesn’t have a chance against you in the dream world. Neither do I. We both know that.”

The statement did little to alleviate Luna’s bewilderment. “...then how--”

Twilight boldly reached out and booped Luna’s nose, cutting off her words. “You’re the great and powerful Princess of the Night. We’ve been telling you that even more than usual the past couple of days. Didn’t you notice? Or were you maybe too busy letting those words fill up your ego?”

Shock settled upon the Moon once again. They had indeed found her Achilles’ Heel. Pride. Pride that had swelled her head to the point that she felt no need to dot all her ‘I’s and cross all her ‘T’s, nor keep one ear on the waking world. Luna looked away, unable to hide the embarrassment on her face.

Twilight sat back and shrugged dramatically. “So, I look at it this way. You could try to break out of your bonds with your magic and walk away right now. Assuming you can truly overcome my magic and you do manage to escape, I’ll probably fail the test, but you’ll also have to live with the shame you’re feeling right now. Or, you can accept this-” she held up the ring, “and own up to your mistake. It’s not like this ring will force you to be submissive after all, so you still have that going for you. Plus, the less you struggle now, the more energy you’ll have...” Twilight smiled, “...because you just don’t know what I’ll do if you try, now do you?”

Luna thought about it. “If I walk away and you fail, I have already told you that you will never be allowed to possess my sister outside of my influence.”

Twilight didn’t skip a beat. “You’re testing me because you want to know if I can handle Princess Celestia on my own. You may be her owner, but you love her and you always give her a choice. If I dominated you without giving you one, then I haven’t demonstrated my ability to accomplish what you want.”

Luna bit her lip. In her mind she traced the logic, but logic was as much Twilight’s realm as dreams were Luna’s. The Moon could find no fault. Finally she turned her cheek to the pillow and spoke.

“...very well. Make me yours, Twilight Sparkle. If you can.”

Twilight had to stifle a giggle as she slipped the ring onto her other teacher’s left ring finger. If Luna saw any significance in her student’s choice she didn’t show it, but she did immediately go about the task of testing Twilight’s handiwork - it would do no good if Twilight could not conjure up a toy such as a suppression ring with efficiency. Luna summoned up an appropriate spell to break her bonds, but felt the satisfying mental thump of a barrier that was well in place.

Equally satisfied with the sight of her helpless companion, Twilight rose to her feet and twirled once before the window, reveling in the light of the moon as it traced her silhouette. She flicked her wrist, and in a flash of light, the occupancy of Luna’s bedroom increased by one.

Princess Celestia, looking not so much a lady of her station, stood mousily in the corner of the room. Her posture suggested she had been ready to appear before her mistress, though which mistress she was averting her eyes from was unclear, at least to Luna. Celestia’s garb made it even more clear that her summons was pre-planned. The Sun stood naked from head to toe, with the swell of her chest, the curve of her hips, and the taper of her legs on full display. Her only garment was the leash she often wore for Luna, save for one key difference - Celestia’s ring held but one tag, clearly emblazoned with Twilight’s mark only.

Luna inclined her head at Celestia. “Pet.”

Celestia caught the accusatory stare her sister was favoring her collar with. She smiled wanly and fingered the tag. “Tonight I’m acting as your student’s pet only, Sister.”

Luna attempted to shrug, though the movement was little more than a jerking of her shoulders. “Your mistress of the moment is clumsy, she forgot to remove my--” There was a shuffling noise, and Luna noticed her lavender panties, spinning from the tip of Twilight’s index finger. “...or perhaps not...”

Celestia glanced at Twilight expectantly. With the accents of her ebon corset swirling in a single breeze, Twilight engulfed Celestia’s entire body in the glow of magic so easily, Luna had to remind herself of the power her sister’s progeny could truly bring to bear. When Celestia was standing before Twilight, Twilight caressed her pet’s cheek and leaned up to favor her with one soft kiss.

“Stay,” Twilight ordered. “I want you to watch which one of your mistresses is truly in control.”

Luna smirked audibly. The sound drew a stare from Twilight that was so piercing, Luna could scarce believe where it was coming from. Twilight climbed upon the bed and made herself comfortable as she straddled Luna’s midsection. Her magic flared again, and Luna’s nightie came to life. The silky garment danced slowly out from under Twilight’s thighs and up Luna’s sides, tickling such that Luna failed to hide a small giggle. Twilight’s expression was, by comparison, hewn from stone, as though she intended to admonish a schoolchild.

“Laugh,” Twilight commanded, the nightie working at Luna’s flesh again. Unable to help herself, Luna obeyed the command and let out an embarrassingly innocent giggle again. Twilight’s frown deepened as the nightie slipped up to expose Luna’s soft breasts to the air of the room. The once freeflowing fabric began to twist like the coils of a snake, pulling itself over Luna’s head and yanking on her shoulders until it became a silken harness.

“Good slut,” Twilight observed. “But your behavior still doesn’t please me. I made your sister mine. Just look at her.” Celestia blushed honestly and stared down at the rug, allowing her nudity to be viewed. “She wanted me to make love to her so badly for so long, that all you did was facilitate it. Now she’s mine, and so are you.”

With a speed far greater than Luna could have managed with her own magic, Twilight produced a thick, black leather riding crop from thin air. She grasped it tightly, drew her arm back, and smacked Luna’s breasts so hard that the flesh instantly began to redden.

“Nghh-!”

“A ‘test’,” Twilight muttered disdainfully. “This isn’t a test, it’s an excuse. I used to watch you play with my teacher from the hallway, wanting to be a part of it. Now you’re watching us play, and you want an excuse to become my property too. All you had to do was ask.”

Luna spoke through gritted teeth, “You know I would not do such a thing.”

“I do!” Twilight declared, the crop coming down hard again, eliciting a cry from Luna. “But I would have let you ask me. I wouldn’t have made you beg. But you’re too proud even for that. Too proud even to enjoy what you know you want, every time you see us together.”

Luna panted through a shock of pain as she watched Twilight draw the tip of the crop along the contours of her breasts. Celestia’s student struck again, and though she used less intensity this time, Luna’s bouncing orbs were twice as sensitive. Luna whimpered loudly, but fought to mutate the sound into one of defiance.

“Don’t worry about your image, princess,” Twilight cooed. “I put a silence spell on this entire wing of the castle. I can do that, you know. I can also do this--”

Luna yelped, her eyes going wide as she felt a smack on her rump just as hard as any from the crop. The angle of the blow was impossible, thus there was only one explanation. Twilight snapped her fingers, and a second spank turned into the sensation of a phantasmal hand liberally groping Luna’s rump from below.

“You underestimate me,” Twilight sat tall, turning the crop over in her magic and casually inspecting it. “I can grope you, swat you, and touch you in all of your sensitive places any time I want, no matter where you are or what you’re doing. Have you ever seen Princess Celestia at court, when she goes silent for a few minutes to let others talk? She claims she’s allowing them to work out their problems on their own. Now you know what’s really going on.”

Luna flashed a questioning look at Celestia. The sun princess bit her lip sheepishly and nodded. “It...occasionally surrendering control is...exciting. You should try it, Sister.”

Luna felt another pair of invisible hands openly kneading her breasts. Twilight folded her arms. “Do you like them? I needed a model to pattern the spell off of. I chose a random guard of low rank and made an excuse until I got the scans I needed of his hands. Every time you feel this spell on you, it’s a simple guard from the barracks, enjoying your body as he sees fit.”

Luna sniffed, despite the blush brought on by the embarrassing groping. “I expected more from you than to go to my sister for help with your test, Twilight Sparkle. Though it doesn’t seem she has the gall to be of much use to you. My control over her runs deeper than yours, as it always will.”

Twilight glanced between the two sisters. Finally she shrugged, and of all things said, “You know what? You’re absolutely right. And if that’s the case, then maybe we shouldn’t even be doing this at all right now.”

With that, the phantom fingers abruptly changed direction, until they were probing at Luna’s flower. Without thought for tact, two of them slipped into her, and Luna watched with unexpecting eyes as Twilight turned to Celestia and waggled a ‘come hither’ finger at her.

“Your sister seems to be busy with a lowly guard, Pet. What would you and I be doing tonight if we weren’t wasting time here?” Twilight cooed. Celestia brightened like a puppy and slid onto the bed next to Luna, her chin finding Twilight’s finger.

“Mm, playing together of course, Mistress.”

Luna felt her cheeks grow warm at the thought of being helpless against the inspection of a mere guard. She raised a brow as she noted the ease with which Twilight sent a titillating shock through the sun princess. It was an ease that Luna was unfamiliar with.

“Well, we have a perfectly good bed,” Twilight drew in close, her voice softening to a whisper as she batted her lashes at her first teacher. “Let’s not waste it.”

Twilight’s fingers were inside Celestia’s channel almost as quickly as her tongue was in her teacher’s mouth. Celestia let out a feral grunt and parted her knees as if trained to do so. Squishing noises came to Luna’s ears far sooner than they should have.

“...I-I am still here, you know,” Luna muttered. Twilight replied between kisses, without looking at Luna.

“Mmh...yes you certainly...mmph...are…”

Luna made two attempts to get up as she watched Twilight turn Celestia towards her. The bonds held fast, and Luna lay helpless as Twilight replaced herself with Celestia, urging the Sun to straddle the Moon instead. Twilight slipped behind Celestia and pulled her slightly back, forcing her to sit with her legs spread as she faced her sister. Twilight’s hand slipped back between Celestia’s creamy thighs, as she drew close enough to blow on Celestia’s ear.

“Show our new pet how well I’ve trained you,” Twilight whispered. She nipped Celestia’s ear harshly, giving rise to a sharp cry, and cooed again, “Show her how quickly you get wet for me. How much easier it is for me to break you down.”

“O-ohh…” Celestia whined, spreading her legs wider the further Twilight’s fingers explored. “...ngh...y-yes m-mistress...I-I love it when you touch me like that…”

Luna felt a slight touch to accompany the invasive one, like the passing of a veil over her nipples. There was no breeze, but she saw a split-second grin from Twilight before the student went back to ignoring her. With little choice but to watch, Luna stared at the fingers playing upon Celestia’s button. They spun over it after every removal from her channel, only to plunge in again and dig at the spots Luna thought only she knew. When Luna glanced at her chest again, she could see a hard nipple capping the swell of each of her breasts.

“Do you like putting on a show for your sister?” Twilight whispered in Celestia’s ear after drawing her tongue up the nape of her neck.

“...mmhmm…”

“It’s a shame she can’t play with us. Unless she submits, she’ll just have to remain a plaything for the barracks.”

“...nuh-uh...a-ahh…”

“Tell her the things Mistress does to you that you just love..”

Celestia didn’t hesitate. Her eyes lidded and her cheeks hot, she peered at Luna. “...ohh...s-she touches me all the time s-sister...s-secretly...s-she turns the collar invisible some days too...a-and makes me keep it on all day…” Celestia bit her lip again, “Nngh...s-she figured out...e-every special place...o-on her own…”

Luna sat silently, but swallowed hard enough that Twilight could see her throat move. Twilight shushed her pet and began to stroke Celestia’s flowing locks. Just as quickly she slapped Celestia’s rump, jolting her as she issued a command.

“Play with your sister. Help me make her more like you.”

The sensation of the phantom hands upon Luna’s secrets abruptly vanished as Celestia received the cue she had been waiting for. She slipped off of her sister and curled up, tucking herself between Luna’s spread legs. There she shamelessly buried her face in her sister’s unprotected flower, taking a great whiff of it before teasing the folds with her tongue. To Luna’s chagrin, Celestia even reported her findings.

“Ooo, Mistress. She’s a little wet.”

Twilight draped herself beside Luna and reached out for one breast, kneading the nipple there openly. “Mmhm, I can tell. But let’s make sure we’re not interrupted by the untimely.”

Luna felt a strange warmth. She glanced down to see the space over her heart glowing a soft red, in time with Twilight’s hand. When the glow faded, Twilight moved the hand to Celestia’s head, repeated the glow for the same duration, and finally explained.

“There now, Pet. That will attune you to your sister’s arousal. You remember what to do, don’t you?”

Celestia was too eager to respond with words. Nodding, she slipped her tongue into her sister and lapped at her, tracing the pulse of her walls and flicking over her button exactly the way she knew Luna enjoyed it most.

Luna closed her eyes and sighed. She remained like that for several minutes, with nothing but the play between her legs and Twilight’s hand gently patting her head, until she found herself approaching release. When the feeling began to boil over, she snapped her eyes open and found Twilight inches away, smiling back down at her. Luna’s face was filled with incomprehension.

“Nope,” Twilight smiled, keeping the psychological petting up. “My pet knows when you’re getting close. I attuned her so well that there’s no way you can hide it from her. I bet she just changed the pattern of her licks, or maybe the speed. Whatever she did, she can keep your body guessing and following changes all night if she wants to. You’ll never catch up long enough to let go of your need.”

Luna rolled her head to the side - it was the only action she could take to release the hold of Twilight’s eyes, but she could still feel them on her, bleaching her skin like a desert sun. “...uughhh...ngh...i-it won’t...y-you’ll not…”

“Yes I will,” Twilight replied easily, curling some of Luna’s hair around her finger. “I’m doing it right now. See, you’re not taking this seriously, and you’re not getting up until you do.” Twilight stuffed a pillow under Luna’s head and propped her up, giving her a clear view of her sister’s machinations. “When she’s finished bringing you to the brink and taking you back down again a few times, my pet and I are going to play together while you watch. And that cycle is going to continue all night long.”

Luna pushed out a sharp breath and stifled a moan. Here eyes were fixed on the bobbing of her sister’s head as Celestia lapped at her, and Luna found she could not look away. She refused to speak, so Twilight continued.

“I bet it drives you just crazy, doesn’t it. You can dominate Celestia too of course, but you have to ease her into it. You must be so curious and jealous of how effortless it is for me.” Twilight lowered to a whisper and traced Luna’s ear with her tongue. “Do you want to learn how it’s really done? All you have to do is ask.” Luna bit her lip hard again, and Twilight giggled. “Oh, don’t worry about holding back. I think I mentioned this already, but I put a cone of silence spell on your entire suite before we even came in. Go ahead.”

With that, Luna ground the top of her head into the pillow, stared heavenwards, and let out a deep, honest moan. Celestia pressed her advantage, bringing about three more cries from her sister, but maddeningly slowed down just as Luna started to reach her peak. Her thighs quivering, Luna’s arching back flopped back down on the mattress as she filled her lungs rapidly.

“...v-ver...very w-well, Twilight Sparkle. I-I will...g-give you your real chance.”

Twilight traced the valley between Luna’s breasts with one finger. “Not good enough. Say it.”

On cue Celestia pushed Luna into another crescendo of moans. The Moon faltered.

“...I will submit to you. F-for t-tonight.”

“Excellent!” Twilight shot into a sitting position, a merry grin playing about her lips. She placed a finger to her lips in thought and glanced between the sibling lovers. Her brow furrowed, but just as quickly smoothed again as the lightbulb in her mind grew bright.

“You know, I had planned to have my way with you myself,” Twilight glared disdainfully down at Luna, “But you’re hardly worthy of that. You’re much better suited to be placed on the bottom, where you belong, by your own slave. That is to say, former slave.” She clapped her hands once, “Pet!”

To Luna’s chagrin, Celestia immediately ceased her task. Her lips wet with juices and her nostrils full of her sister’s scent, she knelt straight up, pushing out her chest instinctively. “Yes, Mistress?”

Twilight glanced down at Luna again. The Moon princess was squirming, her lower body trying to continue the lost sensations by reaching out for them in vain. Twilight flicked her wrist, and in a flash of light, a familiar necklace appeared dangling from her open palm. It was sculpted of onyx and jet stones, set with moonstone accents and ornately-carved designs of pure silver. It bore a disc with a familiar, constantly-shifting holographic image of Luna’s mark at the throat.

“You don’t mind if we borrow this, do you?” Twilight grinned. “Of course you don’t. Pet, here.”

Twilight tossed the necklace to Celestia, who nabbed it out of the air so perfectly, Luna could tell the Sun knew it would be thrown. Celestia wasted no time clasping the necklace in place. She shuddered, and Luna merely watched as the holographic image began to race through a pattern of clouds and Celestia’s new organ rose from between her legs.

Luna swallowed. Twilight laughed.

“I enhanced your original spell a bit,” Twilight tapped the engorged head of Celestia’s erect spire just to watch it bounce. “It’s not inhuman, but it’s just about as long and thick as a human being can possibly be. I wonder if you’ll be able to take it all.”

Twilight’s absent stroking of Celestia’s new erection gradually ceased as she spoke, and so haughty was she, that it took her a moment to notice Luna’s defiant smirk had reawakened.

“I think your ‘pet’ is not equal to the task you have designated for her,” Luna chided.

Luna pointed with her chin, and Twilight followed the gesture to find Celestia, still on her knees between Luna’s legs, softly stroking herself with her eyes lidded. The Sun’s words emerged through panting.

“...oh...sister...ngh…”

Twilight raised a brow. She hadn’t considered the true depths of Celestia’s natural submissive streak in the bedroom, but that was no matter. She placed her hand on Celestia’s and forced the stroking motions to cease. Drawing close, she licked Celestia’s cheek.

“Look at her,” Twilight softly ordered. “My pets are all created equal. Do you know what that means? It means that tonight, she is not your Mistress. She is a student of mine. Remember what it felt like to reach over your student’s shoulders every day? To hover there, dirty thoughts you couldn’t act on swimming through your head, day after day?” Twilight added a certain mischievous curl to her tone. “Do you ever wonder how it might feel to put your little sister in her place, and educate her properly? To have her call you ‘teacher’ as well?”

Celestia shuddered. “...y-yes…”

“Well,” Twilight gave one of Celestia’s nipples an affectionate pinch. “You can now.”

Celestia held Luna’s eyes with her own as she lowered herself to all fours, her bulbous head greasing itself against the latter’s opening. “Sweet little sister,” Celestia cooed as she began to slowly impale her, “You really do have so much to learn. You will make an excellent student of mine.”

Helpless, Luna accepted her sister’s girth and moaned again. Celestia smoothed back Luna’s bangs and took her in a deep, affectionate kiss, feeding the Moon her tongue until Luna was submissively suckling it.

Twilight folded her arms and surveyed her handiwork. Celestia had already begun to develop a slow rhythm and the two were blooming into each other, but it was much as Twilight expected. Celestia’s mindset was better suited for a softer kind of domination, and passing this test meant etching a memory into Luna’s mind that would never go away. Twilight concentrated, her eyes closed, until she felt a certain magical warmth draping over her collarbone. The warmth was replaced by weight, and as the magic tingled deliciously between her legs, Twilight opened her eyes to find her own necklace - and her own penis - right where she had willed them to be.

Twilight placed a hand on Celestia’s shoulder and clucked her tongue a few times, encouraging the overwhelmed dominant back up to her knees. Celestia gripped Luna’s hips and angled them up, continuing her thrusts into the Moon’s hungry channel, while Twilight straddled Luna again, this time at the chest. Taking over for Celestia’s eyes, Twilight held Luna’s stare in place as she curled the Moon’s breasts in her magic, wrapping them snugly around Twilight’s pulsing organ.

“Mmm, this is more like it.” Twilight slipped her considerable length between Luna’s breasts, poked her chin with it, and finally lifted her penis up enough to let it slap down again, right over Luna’s lips. “This is where you belong. Under me and your pet, as we fill you and make a mess of you. One day you’ll be doing this without being tied down.”

Twilight didn’t need to look back to tell that Celestia had stepped up her pace again - the speed of the wet noises coupled with the needy look on Luna’s face was more than enough. She began to pump as well, slower; enjoying the casual use of her new pet’s chest. Whenever Luna tried to look away, Twilight reached out and smacked her cheek to draw her attention back. At length, Twilight’s tip began to poke at Luna’s lips with greater fervor.

“It’s about time for the main dish,” Twilight declared aloud. She purposefully waited for Luna to adopt a questioning look before explaining. “I think a little earlier, I heard something about somebody wanting me to ‘be fed seed as part of my penance for failure, every night until I am so used to worshipping you that the thought of your grace will dominate every waking moment, and follow me into my dreams’.”

Luna, weakened by lust, couldn’t hide her gasp. Her eyebrows peaked helplessly, but she pursed her lips with a stubborn defiance worthy of a black mustang.

“Oh no,” Twilight waved her hand, forming a magical glow around Luna’s lips. “You’re mine, to do with as I please. Every part of you.”

Luna grunted as she felt her mouth slowly open, and a ring gag that had materialized from nowhere slip in. With her own powers suppressed there was nothing she could do, but she wondered if she could have prevented it even without the suppressor ring on her finger. Twilight’s powers never ceased to amaze, nor did the ease with which she wielded them.

Luna fought for every thought against each wave of desire that broke over her reason. Her body was still being claimed by her big sister. She cooed and cried out, her voice distorted by the gag, as Twilight rose up on her knees again, looming before her. Twilight slipped one hand to either side of Luna’s head and held her cheeks firmly, preventing the Moon from so little as turning away.

“It’s time you learned how to control your breathing while somebody else invades you,” Twilight commented. Her tip, bouncing with pale moonlight, slipped into Luna’s mouth with no hesitation thanks to the gag. Twilight proceeded slowly, pausing whenever Luna gagged like a virgin, but she never let up. “That’s it. Feel it sink into you. It’s inevitable and you have to accept it, so you might as well learn quickly.” She raised her voice, “Don’t forget this, Pet. This is how you handle your sister. She’s wild, so you have to pin her down and make her obey until she melts and gives in. Like I know she will.”

“Ngh...hahh...y-yes...yes Mistrreeeng...sss…” Celestia muttered as she pounded her sister like a horny teenager.

Twilight pierced Luna to the hilt for only an instant, and then slid back just enough to allow her to breathe. This continued until Luna began to instinctively understand when to take her breaths, and when she would not be allowed to. The gag made resistance impossible, and her cheeks darkened with a redness that she could not hide.

“Your sister’s going to cum inside you soon,” Twilight whispered. “And you’re going to accept her breeding. But I bet you’ll get there first--” She touched Luna’s noise once, “--won’t you?”

Luna had been able to keep herself in check just from sheer embarrassment and unfamiliarity with the situation, but her defenses were stolen by the new power Twilight infused her with. It flitted about inside her as though it were giggling, and gleefully pried loose the fingers with which the night princess clung to control. Nature took over, and with a mouth full of penis, Luna could do nothing but whimper in the throes of orgasm, her walls spasming obediently around her sibling benefactor. Celestia matched her sister’s pitch and slammed home, holding herself at Luna’s deepest place to allow the pumps of her sticky seed a boost on their way into the Moon’s depths.

Both sisters let out a sigh. Celestia slumped against Twilight’s back, but Twilight held her there with magic, and would not let her fall. Luna’s sigh was one of relief. Twilight rewarded it by thrusting deeply into the Princess of the Night and issuing her next command.

“You’re not done, Pet. Take her.”

Celestia could feel her erection strengthening again, the magic from her necklace allowing only moments of release before bringing her to attention again. She began to move, and the hot squishing noises once again arose. “...yes mistress...o-ohh…”

“You both exist to please me,” Twilight explained. “You’ll chase after your release until I am satisfied, and I allow it..”

Twilight fell silent as she added her motions into the mating pair, indulging in the enjoyment of filling her ears with their moans. She felt the urge to cry out as well - she had to admit that Luna was catching on quickly, and the Moon was turning out to be no slouch with her lips. Twilight forced the whine to come out as a guttural, commanding grunt, and hilted the night princess several times thereafter to keep her from becoming too pleased with the reaction she had caused.

Twilight eventually planted her hands to either side of Luna’s head and lifted her rump off of the Moon’s chest to get the best angle. Luna sputtered but accepted the new assault, her defiance turning to a wordless desire to show she could handle her new submission. Twilight settled her breathing and spoke.

“Hmm, you know, I think I’ve forgotten by now.” She reached up long enough to finger her necklace. “Did these come with fertility magic?”

Luna gurgled, but her eyes widened with wariness. Twilight smoothed back Luna’s bangs and smiled devilishly.

“It doesn’t really matter what they were capable of before. You know how I am when I sink my teeth into modifying a magic spell, and I’ve had months to play with this one.” Twilight slowed her pace, contenting herself with stabbing her prey deep with a single thrust, holding it, and pulling out to administer another. Celestia on the other hand was pounding away like a virgin, and Twilight could easily see the effects when Luna’s eyes momentarily rolled up in her head.

“Came again, did you?” Twilight said evenly. “I bet your sister is enjoying how your uncontrolled spasms feel while she plows you like that. She’s shaking the whole bed. In a way, it’s like the two of you are brand new to sex, and you need me as your guide.” Twilight began to fiddle with a wisp of Luna’s locks. “Your handler, trainer, and owner. Your sister used to be your pet, but I wonder how it feels to know that because of me, your pet is going to breed you? Make you swell up with her seed every day for months, instead of the other way around? You’re both going to make the perfect pair, wearing my mark and my collars…”

Twilight reached around to stroke Luna’s tummy once, “...your sister heavy with my seed, and you heavy with hers...on the bottom where you really belong.”

“Mmnf…” Luna whimpered, her brows turning up as another spasm rocked her. To her credit, she curled her tongue around Twilight’s contours and kept her mouth inviting.

“You can be as strong as you want in public,” Twilight whispered, “but there’s no need for that here. Let yourself go. It’s okay to be my pet, and your sibling’s little sister again.”

“Ohh...s-sister…” Celestia called from somewhere a thousand miles over Twilight’s shoulder. “M-my little sister...th-this is wh-where you b-belonnnngnngh...a-ahh...ahh!”

Celestia’s control was gone. She had become an utter slave to the magic that held her, and could think of nothing beyond breeding her sibling over and over, until the spell decided enough was enough. Again her insides churned, and again she exploded inside Luna, the spell ensuring that each release held an intensity and volume of seed akin to somebody who had gone weeks without. Celestia held her place for a long time, releasing repeatedly until she could feel the ooze of her own seed leaking back out to stain her stomach.

Twilight felt a spark of unfamiliar power swelling up inside her. She increased her pace, matching Celestia’s thrusts almost exactly as the two sisters’ moans reached a crescendo. The organ Twilight could never quite get used to began to pulse, sending demanding messages to a brain that was never intended to deal with it. Finally Twilight let out a high-pitched cry of her own, grabbed Luna’s head in both her hands, and rammed herself in as deeply as she could go on instinct. With each orgasmic throb, Twilight painted Luna’s throat with another gout of thick, salty seed.

For a moment there was no movement at all from any of the three lovers, save for that of Luna’s milking orificies accepting the gift of seed. When it was over, Luna found her head flat on the mattress, with Twilight’s hips mashing her cheeks. Twilight had moved her hands to the headboard and lost herself in the throes of release until a certain gagging began to issue forth from the receptacle beneath her. She glanced down to find Luna, as wide-eyed and bewildered as Twilight herself when she’d first been discovered spying on the sibling lovers.

Twilight slowly slipped out of Luna’s throat, beating an orderly retreat with an air of control rather than outright fleeing. When her tapered flare passed Luna’s lips, Twilight took her time painting the Moon’s cheeks with the bulbs of seed that were left, dampening her soft flesh with the mark of Luna’s owner. She took her time of this, completing her task entirely before she finally banished the ring gag back into the oblivion from whence it came.

When Luna regained control of her lips and head, she furrowed her brow and again looked sharply away. “F-fertility indeed,” She muttered. “You cannot keep my powers at bay forever. When they return, an anti-conception spell is but a trifle.”

Twilight’s grin never faltered. “The guards call that ‘morning after magic’. I just thought you should know, considering your own sister just bred you. But who said I can’t keep your powers at bay if I want to?”

Hours ago Luna might not have believed that for a moment, but now her eyes flashed again with uncertainty. “...ridiculous. The only thing that keeps your ring on my finger is time. You will have to allow me to return to my duties eventually.”

Twilight folded her arms and settled her rump on Luna’s chest again, the Moon’s bare breast lying open before her. The breeze caught the crimson accents of Twilight’s ebony corset, framing it against the moonlight and adding to the drama of her words in a way Nightmare Moon would have been proud of.

“You overestimate yourself, Princess Luna. Pet, come.”

Celestia slipped out of her sister and crawled obediently to Twilight’s side, coming up on her knees. The Sun was drenched in sweat, but her flowing locks continued to beat a lazy pattern in the air as Twilight took her one-fingered under the cheek and shared a kiss. Her eyes held Celestia’s with ease, the princess offering them willingly.

“You’re mine, aren’t you? Mine forever?”

“Mmh,” Celestia closed her eyes and practically squeed. “Of course mistress, there’s no need to ever be set free from you…”

“Show me your hand.”

Celestia held out her hand. Nothing seemed to be amiss about it, until Twilight waved her own, and a suppressor ring simply appeared upon Celestia’s finger. Luna knew the ring hadn’t just materialized. It had been there the whole time, and as she mouthed the word ‘invisibility’, Twilight giggled.

“Perfect invisibility, actually. Basic invisibility won’t do. If you were to turn yourself invisible it’s true that nobody could see you, but a savvy observer might notice how the rain seems to stop for no apparent reason around you, or they might see the strange impressions of feet in the carpet where you’re standing. I’ve done the research, and my invisibility is an art. Even individuals who are magically attuned will never notice it. Only a specific spell cast to detect magic will pick up the presence of my pet’s ring and her collar, but who would have the gall to cast something like that in open court? And on the princess, no less?”

Luna almost choked on the remnant of seed that had collected around her lips, which she was lapping up without thinking. “But...I have seen her cast spells recently in public…”

Twilight reached down to grope one of Luna’s breasts casually. “My spells. We’ve been practicing for awhile. My pet doesn’t go anywhere anymore without her trusted advisor - me.”

Luna’s eyes went back and forth between the two above her. Celestia shrugged - her smile was sheepish, pure, and undeniably truthful.

“It’s...I enjoy it, Sister. There’s no harm done, it can be cancelled quickly in true emergencies, and our subjects don’t have to know.”

Luna blew out a breath, “Y-you...you presuppose that I will not simply remove the ring myself.”

Twilight laughed easily. “The ring is cursed of course. Right now nobody can remove it - not until you accept me as your mistress, that is. Then at least I’ll be able to. As for the collar, you’ll learn to keep that in place on your own. Just because I want it that way.”

Luna faltered. “I...but…”

Twilight waved a hand dismissively. “And until you accept me as your mistress, you can lay here. Celestia is perfectly capable of raising the sun and the moon all on her own.” She rubbed Luna’s tummy again, “You can just stay right here and be our plaything, where you’ll take turns being mother to both our children. There’s no way you’re going to break those bonds on your own after all, so magic will be forever lost to you. We’ll just fill you up with seed whenever we want to, and I’ll take care of your pet’s needs in your stead. Doesn’t that just sound fantastic?”

To prove Luna’s helplessness, Twilight waved her hand, and Celestia’s erection bounced proudly again. She favored her pet with another deep kiss, drawing her fingers over Celestia’s girth, and nudged her back into place. Celestia easily settled between Luna’s legs again, entered her to the core, and bit her lip, huffing out a joyful breath as she took her little sister anew.

“And you~” Twilight grinned and touched Luna’s chest, bringing back the warm light that had before reduced Luna’s resistance to a trifle, “you don’t even have to submit to me with words. Just cum for me, while I sit here and enjoy watching you. Show me the desire to give in right on your face. That’ll be enough. Isn’t that just so easy? You should really thank me for letting you off this easily.”

“...nngahh...ahh…”

Twilight’s fingers danced over her own erection. In complete control over the magic that influenced them all, she sunk her own need down into a cozy afterglow, and stroked herself passively while her two charges were brought back to the tips of desire. Without her natural gag, Luna tested the limits of the cone of silence by screaming out her passion, her hips bucking against their restraints as her arching back attempted to lift Twilight several inches higher off the mattress. Celestia matched the cry with such perfection, Twilight couldn’t help but comment.

“Mm, I guess sisters really are alike.”

Twilight caught Luna’s gaze once again, holding her eyes as the Moon lost all composure. Robbed of even basic thought, only in the back of Luna’s mind did a nascent thought remind her that few had ever seen honest release in her face. Her silky pussy walls gripped her sister’s shaft in uneven, clumsy strokes, until Celestia rooted her in place with a single impale and began again to breed her. Twilight dipped her tip in the marks upon Luna’s cheeks and smeared them around, as Luna’s flicking tongue came out to greet her mistress with each pass.

“Mmhmm…” Twilight snapped her fingers, “Pet, don’t spare it all for breeding. Mark your sister.”

Every release Celestia experienced that evening had been spellbinding, and this one was no different. With the magic ensuring that enough seed was stored up to account for weeks of denial, she pulled out of her sister and began to bathe Luna’s stomach in sticky semen. Twilight slipped off of Luna and slunk down to her side, just to enjoy smearing each of Celestia’s offerings around, rubbing it into Luna’s flesh by the power of magic.

Luna collapsed. Her lungs, no longer held down by Twilight’s weight, desperately circulated air as Luna stared dumbly at the ceiling, the stones swirling into gooey color in her clouded mind.

“...th-thank you...m-mistress…” Luna finally muttered.

“Shh,” Twilight cooed. “That’s all I needed to hear.”

Twilight turned her attention to Celestia, who was also panting like a dog. Of her own accord, Celestia kissed a puddle of her own release upon Luna’s stomach, and then rubbed the rest into place with her breasts. Approving, Twilight used her magic to pat the a spot on the bed to the other side of their captive.

“Rest, Pet. You’ve done well.”

Celestia flopped on the bed like a filly, shaking the entire mattress as she fell. The magic finally allowed her a complete release, and she simmered with afterglow, laying flat on her back as her breasts heaved air in time with Luna’s. “Mmh...we don’t have to untie her yet, do we Mistress?”

Twilight laid her head on one of Luna’s breasts. The Moon did not complain.

“I think we can leave her like this for tonight. I bet she’s ready for bed anyway, despite the hour. Aren’t you, new pet? You know what it’s like to have no choice now, and you like it, don’t you?”

Luna’s voice was below a whisper. “...y-yes mistress...I enjoy your restraints…”

“Of course you do,” Twilight smiled. “Rest now, you earned it. You’re going to look beautiful with an invisible collar on.”

* * * * *

In the waning hours of the night, Princess Celestia found that she could not sleep despite her exhaustion. Excitement clawed at her consciousness, picking it up and dragging it out every time it sought to sink into the darkness of rest. She lay naked beside her bound sister, with her beloved student turned mistress on the other side. The new dynamic to their relationship was positively titillating.

“Luna? Are you awake?”

A small snort preceded the Moon’s words. “I am, Sister.”

“Do you suppose Twilight passed her test?”

“I suppose she did, yes.” Luna paused, and then offered, “You understand why I insisted upon it, yes?”

Celestia cuddled into her sister’s side smiling brightly. “I do. Thank you Luna. I could ask for no better sister.”

Luna had been staring at the ceiling for what felt like an hour, also unable to sleep. She thought to command her big sister to her rest, but Celestia went on.

“You know that Twilight won’t force you to bear children. But if you let her, she’s not kidding about it.”

“I know.”

“So what will you do?”

Luna paused. “I...do not know. In all our years, I have to admit that I never gave serious thought to...spawning, before. Though I suppose...Mistress willing, I might consider it.”

The sisters shared a knowing grin, until a levitated pillow summarily struck them both in the face.

“Sleep,” Twilight muttered, not bothering to lift her head nor make eye contact. “Don’t make me gag you both.” She trailed off, droning to herself about having lost nearly two days of sleep in preparation for Luna’s submission.

“Yes mistress,” The sisters replied in unison.

An hour later, dawn began to peek over the mountains of Canterlot.