Taking the Sun

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.