Luna sat on her throne, utterly bored. Few ponies were out and about in the castle in the middle of the night. The only ponies around were the ones in the stained glass windows that lined the long hallway. The glass was pretty enough, but if she wanted to just sit around doing nothing while looking at pretty things she would have stayed on the moon. Especially since the beauty of the sun and Equus in the inky black of space dwarfed the plain aesthetics of the effigies in glass.
The door to the throne room opened, and Luna sat up straight in case Celestia had come to check on her. But rather than her sister, a plain mint-colored mare walked past the door. She held a small feather duster in her hoof. The small mare stopped in her tracks as soon as she saw Luna's eyes glowing softly in the darkness.
"Nigh-" she quickly covered her mouth with the feather duster. "I-I mean, Princess Luna. I...I didn't know you…" The poor mare trembled in Luna's presence.
"You are here to clean?" Luna asked.
"Y-Yes, your highness."
"Then clean."
The mare nodded, and quickly went to one of the stone pillars to dust.
The princess of the night rolled her eyes. She supposed the mare's reaction was to be expected. Luna had only been saved from the infamous Nightmare Moon but a little more than two weeks ago. Yet, even Luna had to admit that a thousand years in exile had...not been easy. She couldn't exactly shrug off the experience in as little as fourteen days.
Luna watched the young mare's pert ass as she walked away, and the princess' mind filled with thoughts of forcing the mare down and having her way with her. Luna licked her lips. It had indeed been a long time since she had felt the warmth of another pony. And in that very long, very cold expanse of time and space, Luna had developed quite a thrilling spell or two.
Luna's horn glowed for a moment, and she crossed her legs.
"Cleaning mare," Luna barked.
The mare jumped and turned to face Luna. "Y-Yes, your highness?"
"Approach the throne."
The mare did so, her legs shaking. Luna smiled and uncrossed her legs to reveal the hard cock she had conjured for herself. Thick, long, and veiny, the cock twitched and gave off an ethereal blue glow that reflected off the cleaning mare's eyes. As she gazed at it, the mare eyes went blank, and her jaw relaxed, as did her entire body.
Luna idly rubbed the tip of her new equipment. "Well? Is it not magnificent?"
"Yes, princess," the mare said, her voice breathy.
"Come, admire it up close."
The mare slowly climbed up the steps until she was at the foot of Luna's throne. Luna smirked at the entranced mare. Her breathing was quick and excited, and she looked longingly at the throbbing cock inches from her face.
"It's beautiful, your majesty," the mare moaned. She brought her lips closer to the shaft. "May I…"
Luna chuckled. "Yes, lavish your affections upon it."
The mare groaned and brought her lips to touch the princess' shaft. She gave Luna's cock several sucking kisses along its length and rubbed her cheek against it.
"Please, your highness, may I pleasure it?" The mare's voice dripped with need. "I promise it'll be good."
Luna opened her mouth to say something, but a slow creak from the door made her body tense in fear. The cock dissipated into the air, and the mare blinked. She shook her head and with a groan rubbed her temple.
"What happened?" she asked, more to herself than to the princess.
"I asked you to dust my throne," Luna snapped.
The mare squeaked, and quickly swiped her feather duster across Luna's throne. Luna tore her attention away from the cleaning mare and looked back at the door. Nobody came. With a sigh of relief, Luna supposed it had just been the wind. She rubbed her chin and hummed in thought as she looked back at the mare.
While it would be fun to take her in the throne room, it was just too risky. She would have to use her in a more private setting.
"Cleaning mare."
"Y-Yes, princess?"
"I have a special task that requires your skills." Luna rose from her throne and headed out of the room. "In one hour, come to my private chambers."
"B-But I'm supposed to just clean the--"
Luna shot her a vicious glare that silenced her on the spot. "Is that insubordination I hear?"
"N-N-No, princess!" the mare stammered. "I-I-I-I'll be there."
"Good."
Luna left the throne room. As soon as she was out of sight and made sure there were no other ponies around, she skipped toward her bedroom. Oh, she was going to have so much fun tonight!
An hour later, Luna sat on the edge of her bed. Her legs were splayed and her bewitching cock glowing between them. She faced the door, waiting impatiently for the cleaning mare to come through the doors. Several minutes passed.
Luna growled in frustration. How dare such a lowly mare keep a princess waiting? Luna would have to dole out proper punishment when she arrived. Luna stroked herself at the thought of what she would do to that mare.
Finally, the door opened, and Luna leaned back to give the mare a good view.
Celestia sauntered in. Luna froze. Her heart skipped a beat. She didn't even have enough sense to dispel her cock. Luna swallowed and tried to calm herself down. Not all was lost. Celestia didn't know the extent of her spell, she probably just thought she had barged in while Luna was trying to pleasure herself. Yes, that was it. Celestia didn't even knock!
"Do you mind!?" Luna snapped.
Celestia didn't answer.
Confused, Luna looked up at her sister. Celestia's eyes were blank, and her jaw hung slack. Luna gulped. The spell...worked? No, that was impossible. It shouldn't be able to affect the princess of the sun, Luna's magic was nowhere near strong enough. Unless…
"Luna, when did you get such a lovely cock?" Celestia said.
Luna smiled. "Sit between my legs, dear sister. It's much more magnificent up close."
Celestia did so, and mewled at the sight of the massive dick in front of her. Just as the cleaning mare did before her, Celestia kissed the shaft, sucking it gently before moving her lips to give it another. "Please sister, allow me to pleasure it."
"Oh? You wish to satisfy my desire?" Luna asked with a mischievous laugh. She had long dreamed to dominate her sister. Now the chance was here, and she wasn't going to let it go to waste.
Celestia nodded in answer, and brought her head down lower. She pressed her lips against her heavy sack and suckled on it as if scared to harm it.
Luna hummed in feigned thought. "I suppose I can bestow upon you the high honor of being my slut for the night." Celestia shuddered at her words. "Get on the bed, on your back," Luna ordered.
Obediently, Celestia climbed onto the bed, the mattress groaning under her weight. Luna guided her as the princess rolled onto her back. Luna grinned at the position. Celestia's whole body lay on the bed except for her head. Her horn pointed to the floor while her chin faced the ceiling, and it gave Luna the perfect view of the mare's pure white throat.
Luna reared up, placing her front hooves on either side of Celestia's body. She rocked her hips back and forth, rubbing her shaft against the princess' soft lips. Celestia moaned from the contact.
"Have you ever used your throat to pleasure a cock as massive as mine?" Luna asked.
Celestia whimpered. "Sometimes when I have trysts with the royal guards, I throat their cocks, but none of them even come close to you, sister."
Luna smiled. "They don't? Then how am I to know whether you're skilled enough to pleasure me? I've had many mares and stallions unable to take my entire length, even after endless streams of promises. None of them worthy enough to receive my essence."
Celestia panted. "Please, Luna, allow me to show you how well I can swallow your cock." She opened her mouth wide and brought her tongue out to lick at the underside of Luna's member. In response, Luna brought her hips back and allowed Celestia to eagerly suck on her cock head.
Luna reveled in the sound of Celestia's sucking. She lathed her tongue around Luna's cock and gently applied even pressure as she coaxed out her precum.
"Very well, I suppose you've earned a chance at the very least." Luna smirked and forced her cock deeper into Celestia's waiting throat. Celestia groaned as her sister's dick slid deeper into her, and Luna grinned at the sight of Celestia's bulging throat. Finally, Luna's balls smacked against Celestia's nose. Luna stroked the bulge in Celestia's neck with enough pressure to feel her own hoof with her cock. Celestia all the while had a serene expression on her face.
"Such a tight throat you have, sister," Luna cooed as she retreated her cock all the way until only the tip remained. "Now how much punishment can it take?" With a forceful thrust, Luna slammed her dick back into Celestia's mouth. She spluttered and gasped, but managed to take Luna all the way to her balls once again.
"Oh, tight and resilient. Quite impressive," Luna said.The wet heat emanating from Celestia's mouth was almost too much to bear. Almost as if the princess had the sun itself residing in her gullet. Combined with the tightness clenching around her cock, Luna could hardly contain herself. Her sister's maw was formidable indeed.
Luna moved her hips again, but this time settled into a more relaxed pace. She humped her sisters mouth and for several minutes the only sound filling the room were the wet squelches of Celestia's throat as it took Luna's cock, and the moans of the royal sisters.
"Such a good throat my slut has, a wonderful throat indeed," Luna cooed.
Celestia whimpered and moved her mouth as if too speak, but couldn't. Luna chuckled and brought her cock out of her mouth with a pop. Luna rested her shaft on Celestia's chin. Her cock was soaked and dripping with Celestia's saliva.
"You mean to speak, slut?"
"Please, Luna, cum in my throat," Celestia begged. "Haven't I earned it?"
Luna hummed and tapped her chin. "I suppose your skills have been adequate." Luna moved as if to reinsert her cock into Celestia's waiting mouth, but Luna stopped short with her cock's head pressed against her sister's lips. Celestia whimpered and wrapped her lips around the small part of the head that she could reach.
"Before I fill your belly with my essence, you must call me 'mistress'."
"Mistress," Celestia gasped, her hot breath caressing Luna's cock.
"Good. Now beg. Beg for your misstress' cock, my pet."
Celestia whined. "Please, mistress, fill my mouth, it feels so empty without it." She opened wide to prove her point, and her mouth did seem rather lonely without a dick properly stuffing it. Luna smiled and pushed her cock past Celestia's waiting lips. The white alicorn gave a happy moan just before Luna obstructed her airway.
Luna continued rutting her sister's throat, but this time her pace became faster. If Celestia wanted her cum, then Luna was going to give it. Luna clenched her jaw and buried herself as deep as she could go. She came with a yell, and Celestia's eyes rolled back as thick ropes of cum shot down her throat and into her stomach. Celestia wrapped her forelegs Luna's ass and pushed her hips forward still, wanting her sister's dick even deeper.
The two remained motionless until the spurts of cum weakened into a dribble. With a labored sigh, Luna pulled out of her sister. She rested the base of her cock on Celestia's chin as both princesses paused to catch their breath. With Luna's balls tantalizingly in reach, Celestia engulfed both and gently sucked them like hard candy. Luna smiled at the attention, and closed her eyes for a few moments to enjoy the sensation of Celestial tongue juggling her sack.
Luna pulled her balls away from Celestia and brought all fours back to the ground. Using her sister's throat had been nice, but now it was time to enjoy the other delights of Celestia's body, and Luna knew exactly the position to do it in. Luna gave her orders to Celestia, and she dutifully obeyed them.
Luna climbed back onto the bed and took a minute to admire her sister's body. Her head rested on the floor while her ass was high in the air right by the bed. Celestia swayed her ass side to side, and her pussy dripped in desire.
"Is it to your liking, mistress?" Celestia asked.
Luna raised her hoof and gave her sister's ass a hard smack. Celestia moaned at the pain while Luna grinned at how her ass rippled from the impact.
"I suppose it will do," Luna said. She reared up and put her front hooves on the small of Celestia's back. She brought her hips forward, and her shaft pressed heavily on Celestia's puffy lips. Celestia's body shivered, and she bent her knees to rub her pussy against Luna's member.
"P-Please, mistress," Celestia groaned. "Don't tease me anymore."
Luna gave her sister another hard slap on her butt, and Celestia yelped in pain.
"I will do with you as I wish, slut," Luna barked. "You should be grateful that a royal guard's plaything like you even has the chance to behold my cock." Luna slapped her again, and Celestia belted out another pained cry.
"I'm-I'm sorry, mistress," Celestia panted. "Please forgive me."
Luna stepped away from Celestia and parted her ass cheeks. Her asshole was the same pure white as the rest of her body.
"Oh, I will forgive you," Luna sneered. "But first you must withstand my punishment." She mounted Celestia again and pressed the head of her cock against her.
Celestia's eyes widened. "W-Wait, mistress, I never...and you're so big, I don't think--"
Another slap of her ass silenced Celestia. With a scoff, Luna forced the head of her cock past the ring of her sister's ass. Celestia screamed in pain as her asshole was stretched past what was physically possible for a normal pony.
"Such insubordination!" Luna yelled. "How many times do I have to tell you, slut, that you're mine to do what I wish? Perhaps I should have an entire platoon of lunar guards remind you until you're nothing but a cum-stained mess on the floor!" Luna plunged further, intending to shove her entire dick into her, but she had to stop after an inch from the tightness and heat of Celestia's ass. Her throat was nothing compared to this.
Celestia wouldn't stop yelling in pain, her wings flapped wildly as if trying desperately to carry her away, but it was in vain.
"P-Please, mistress, have mercy!" Celestia pleaded at the top of her lungs.
"Mercy!?" Luna yelled back. "The only mercy you get is the spit still on my cock."
Luna pushed her cock deeper in, this time she forced herself to go all the way in until her balls slapped against Celestia's pussy. Celestia's hips bucked, and she screamed so loudly it actually hurt Luna's ears. But Luna ignored her sister's cries and focused on overcoming the incredible tightness at the base of her cock.
"Mistress! I'm going to break!"
Luna clenched her teeth and pulled out of Celestia until only her cock head remained. "Then break." With harsh speed, Luna plunged into her again. Celestia never stopped her shrieks and howls as Luna ravaged her sister's ass. Truth be told, Luna wasn't faring any better in this contest of endurance. Celestia's asshole clenched around her cock like a vice, that and the incredible heat made for an experience more painful than erotic.
Oh, but the screams. Celestia's delicious squeals for mercy. Those made Luna's balls tighten and her cock throb. Seeing her sister squirm and tremble beneath her, her hips bucking and her wings flapping wildly, brought Luna more erotic pleasure than ordinary sex ever could. This is what she wanted all those years ago, to conquer Celestia and rule over her.
Luna groaned as her climax quickly approached. "Are you ready to accept my essence, slut?"
Celestia didn't respond, and Luna supposed she couldn't hear her over her own screams.
Luna's whole body tensed, and with a shudder she shot her load into Celestia's ass. Celestia's yells grew even louder as Luna's cum splattered back to cover Luna's hips and Celestia's butt and thighs. Luna thrusted a few times more into Celestia until, finally spent, she fell back onto the bed with a satisfied sigh. Her cock disappeared into the air.
Celestia stayed in place for a minute to catch her breath. Once she did she climbed onto the bed to snuggle up with her sister. Luna allowed it.
"Service me with your tongue, slut," Luna commanded.
Celestia peered down at Luna's crotch, and her eyes widened as she realized her tantalizing cock had disappeared. Celestia's hoof shot up to rub her temple, and she groaned.
"Oh, goodness. Where am I? What happened?" Celestia asked.
Luna rolled her eyes. "Enough games. I demand to be serviced."
"You knew?" Celestia asked, taken aback.
Luna heaved another sigh, this time one of annoyance. She took Celestia's horn and pulled her head into Luna's lap. Taking the hint, Celestia traced the edges of Luna's lower lips with her tongue, expertly teasing the dark mare's clit with a gentle press from the flat of her tongue.
"Of course I knew," Luna said. "My magic is not effective against you. Honestly, do you think me a fool? Perhaps I should introduce you to my riding crop."
Celestia chuckled and lifted her head from between Luna's thighs. "Well, I couldn't just let you go around the castle molesting staff. Speaking of which…" Celestia sat on her thighs at the foot of the bed. Her horn glowed for a moment, and a shimmering white cock appeared between her legs.
"I believe attempted rape deserves a just punishment."
Luna gulped. Celestia's magic cock wasn't as thick as Luna's, but it was much longer. The princess coughed to compose herself and gave her sister a glare. She took a deep breath and used her most commanding voice. "Put that away, slut, and continue servicing me."
Celestia chuckled and approached Luna. She brought her mouth close to her sister's ear and whispered. "No such luck, my little pony. Now get on your back and open that lovely mouth of yours. This is going to take all night."
Luna shuddered. "S-Sister…"
Celestia hooked her foreleg around Luna's middle and dragged her over so that her head hanged off the edge of the bed. Celestia moved to take the same position Luna had, with her cock against Luna's lips.
"Sister, please," Luna begged.
"I believe you mean 'mistress'," Celestia said with a kind smile that hid her viciousness well.
Celestia pushed her hips forward and forced her cock past Luna's lips and deep into her throat.
