The Royal Nightly Ritual

by YourUnhealthyObsession

Rating: mature
Tags: Profanity, Princess Celestia, Slice of Life, Princess Luna, My Little Pony: Friendship is Magic, Fetish, Romance, Porn, Sex
Length: 4947

The Princess of the Night and her big sister perform their nightly ritual... with a little twist.

Princess Luna enters her sister's chambers to perform their 'nightly ritual'. Celestia is well prepared for their usual routine, but has a few new tricks she wants to add to spice things up. Luna is, understandably, apprehensive...... at first.

Luna better strap in, or else Celestia will do it for her.

This was written for the April 2019 Siblings Incest Contest in the Incest is Wincest group. I wish everyone else participating good luck!

Kink Warnings: Contains anilingus, cunnilingus, sex toys, squirting, bondage, princest, and, worst of all, cuddles.... you've been warned.

(Cover pic is by Magnaluna. Used without permission. Will be removed if requested by the staff, author, or otherwise. Thanks!)

Published 2019-04-30 09:20:01 UTC
Last updated 2019-04-30 09:20:01 UTC

The Best Performance Yet

Princess Luna crept through the halls of Canterlot Castle, eager to get to her destination as the veils of the Moon's light lit her path. Her sister had informed her that she could expect something she had never experienced before, and though she was excited for the new addition to her and Celestia's "ritual", she still had to maintain her composure and remain stealthy as she approached her destination. She did not want to alert anypony who may be wandering these same halls lest she be questioned as to where she was heading, so it was best to avoid confrontation altogether.

The night princess breathed a heavy sigh as she reached her sister's bedroom, opening the massive doors that led into the spacious chambers of the Princess of the Sun. Since they have been doing this ritual every night for quite some time now, knocking was no longer a required formality; in fact, she was expected to NOT knock. The door slowly shut behind her and through the darkness, aided by the moonlight filtering in from the balcony window, Luna spotted the mare of her greatest desire laying on Celestia's bed.

It was the Princess of the Sun herself: Celestia. She was clad in an extremely revealing piece of red, silky lingerie. They hugged her curves in all the right places, starting from the top of her chest fluff, traveling down her barrel and wrapping around her generously wide hips, finally finishing at her taut flanks. Celestia wore a pair of dark blue panties with a darker shade of blue lace surrounding the edges. A pair of matching striped stockings was on each leg as well. Luna swallowed hard, her pulse beginning to quicken as she gazed upon the beautiful goddess before her. The night princess felt a tingling sensation already starting to burn in her belly that quickly spread to other regions of her body. She approached.

Celestia observed Luna as the walked towards the bed. She could tell her sister was nervous, yet excited, about what the surprise addition to their 'ritual' was. A small smile tugged at the corners of her lips as she patted a spot on the bed next to her. Luna got the message and gave her wings a massive flap, gently settling on the spot Celestia had appropriated for her. She did that of which a cat usually does before lying down on a surface, pressing small indentations into the mattress and bedding before lowering onto her belly and getting cozy. She leaned against her, closing her eyes as she felt the heat transfer from the sun princess' side into her own. Luna closed her eyes and breathed a content sigh.

"Comfy?" Celestia questioned. Luna simply nodded her head, allowing a small 'Mhm' to go along with it. Celestia smiled warmly at the response. Though it was a very basic, insignificant response, it came from her beloved sister, and that was enough. She loved everything about her little sister. Her smile, her laugh, her voice, her eyes, her body, and, in the depths of her heart, she knew Luna felt the exact same way. They shared everything together: meals, servants, court holdings, 'toys', and so much more. Celestia gave her sister's head a little peck and nuzzled it, making sure all her love for her sister went straight to her.

"Good," the sun princess replied, "that is the goal for our experiment tonight. If you are uncomfortable with anything that happens going forward, you let me know and I'll stop immediately."

Luna opened her eyes and looked up at her towering sister, a happy twinkle in her magnificent blue orbs. "Do not worry, Celly. I trust you completely. I have no reason to be unnerved."

Celestia smiled at her younger sister's confidence in her, feeling her heart begin to beat faster the longer she stared at her. Celestia leaned down and surprised her sister with a deep, lip-embracing, body-stiffening kiss. Luna squeaked in surprise at first. She never knew when Celestia was going to kiss her, but she soon allowed her eyes to flutter closed as they got more into the moment. The sun princess took the lead, as she usually does, and wrapped her forehooves around her more petite sister, rolling her onto her back. Luna allowed everything to transpire, only focusing on the lips currently connected with her own. She soon noticed a soft, warm, and fuzzy presence on her belly, traveling upwards to her chest and ending right below her neck. She quickly figured out that it was Celestia laying on top of her own smaller frame and getting comfortable as they continued their passionate make out session. Luna wrapped her own forehooves around Celestia and pulled her closer, feeling more of her warmth spread around her body.

'Nothing seems out of the ordinary so far', Luna thought to herself. Besides the new lingerie Celestia had decided to wear, nothing appeared to be different. Their ritual was proceeding as it usually does. Especially the part where she noticed that the air in her lungs was getting rather stale and needed to come up for a fresh lungful. The night princess tapped her sister on the back twice. Celestia immediately separated herself from her younger sister's lips, recognizing the signal that Luna needed some air. The older Alicorn chuckled as she gazed upon her heavily panting sister.

Being older meant the sun princess had more experience. Which means she didn't have to come up for air quite as often as her younger sibling. Luna scrunched her muzzle in annoyance and huffed angrily. Celestia merely leaned down a bit and booped her nose on her sister's nose. "Do not worry, sister. One of these days you will be experienced enough that I will be the one giving you the signal."

This appeared to quell Luna's attitude a little, but she still seemed slightly miffed. Celestia kissed her again and smiled happily. "The important thing is to not give up and keep practicing." The older mare wasn't sure if it was the kiss, or the reassuring words, but Luna's expression softened as she resigned to just laying there panting.

Luna looked upon her sister's face with nothing but love and adoration. Sighing, she wrapped her arms tighter around her sister and pulled her in for a hug. "You always know exactly what to say, dear sister," Luna said in a hushed whisper.

The white Alicorn returned the favor and embraced her younger sister even more, pulling her body against her own as much as possible. Their cheeks brushed against each other as the two Alicorns rejoiced in each other's presence. "That's because I love you... ," she whispered into Luna's ear, "I love you so, so, SO much. I know I have told you this a thousand times by now, but you are so precious to me. I will never allow anything bad to happen to you. Ever. I will always be there for you if you need me."

Celestia emphasized her words with a lengthy, drawn out peck on Luna's cheek. The night princess had small rivulets of water running down the sides of her head as her sister's words kept repeating themselves in her head over and over again. There were so many things that Luna wanted to do at that moment. She wanted to pounce on her sister and kiss her on every part of her face, and then once she was done there she'd start trailing the kisses further down until she reached her stomach and give it a few smooches. Then continuing on with that pattern until she reached Celestia's teats, and then she would....

Luna pushed that fantasy to the back of her mind for now since it would come true in due time. Instead, she resigned herself to just enjoying the feeling of her sister on top of her, and feeling the tiny little pecks from Celestia's lips on the side of her face. With one big final smooch on Luna's cheek, Celestia finally pulled away and gazed down at her sister with a smile that could warm all of Equestria. Luna grinned back up at her as she anticipated what would happen next.

"So," Celestia began in a sultry tone of voice, "shall we begin? I have several surprises in store for you."

Luna nodded eagerly as her imagination began to run amok on what Celestia could possibly have planned. Before her fantasies could get too wild, however, she was blinded a little by her sister's horn lighting up with a golden aura. A closet on the far side of the bedchamber shined with the same aura emanating from Celestia's horn. Opening to reveal the contents hidden inside, out floated a metal bar with two brown leather straps on either end, a pair of black, fuzzy cuffs that had two equidistant cuffs and a third longer, but smaller, brown strap extending down, and finally a red ball attached to velcro straps. The midnight Alicorn felt a lump grow in her throat as she instantly realized where this was going.

Luna felt her marehood start to moisten at the sight of the equipment and squirmed the tiniest bit. Celestia, as if sensing her sister's anticipation, wasted no time instructing her on what to do.

Celestia got up from on top of Luna and pointed to a spot on the large bed. "Get in the center of the bed, raise that cute butt of yours up in the air, and fold your forehooves behind your back."

The younger Alicorn obeyed without question as she blushed at the comment on her rear end, and moved from the edge of the bed, where Celestia previously had her pinned down, to the center. Following the orders given to her, Luna raised her curvy ass in the air and lowered her head onto the mattress, then folded her front legs behind her back and awaited further commands.

Luna had always enjoyed this nightly ritual that she and her sister had because Celestia always took the reins when they had their fun (pun may or may not be intended). To her, it was always so liberating to be told what to do, instead of telling others what to do. She never had to worry about anything other than what she was commanded to. All her decisions were made for her, and that was a major turn on for her. Even now, she could feel the heat from her current situation overtaking her mind as lust for the future activities invaded her brain and marehood, and as the love and compassion for her sister made her heart beat faster and faster. She had complete faith in her sister, and any doubts she had about this new addition to their ritual were gone as her arousal began to make her loins ache.

Celestia took a moment to appreciate how obedient her sister was during their lovemaking sessions before strapping her in because, even when faced with the unknown, she did not hesitate and followed directions exactly. It made her so happy that Luna had so much trust in her, and somehow she was going to repay her younger sister for being so faithful and loving. There was also an odd sense of pride that she held for Luna too. She had come a long way since Nightmare Moon.

Since this was just a trial run for their new addition, Celestia decided it would be best if they started out with some softcore bondage, and then if all went well, they could throw some roleplay and other scenarios in. But for now, the sun princess started things out by taking the bar with the the straps and placing it between her sister's spread out hind legs. Using a little magic, she moved one leg into position and firmly secured it within the strap. She repeated this for the other leg, until both of Luna's hind legs were approximately a foot and a half apart from each other.

Luna quivered from her sister's actions as thoughts of what could soon happen to her filled her head space. From the position she was in on the bed, most of her sight was blocked from what was going on behind her thanks to her mane and a few miscellaneous wrinkles from the bedspread. The feeling of soft fuzz soon made itself present on one of her forelegs, then the other, and with one perfectly synchronized 'click' they locked themselves in place. Luna bit her lip as this only worked to make her more aroused, her tail flagging slightly in response. Luna knew this was normal for a mare (especially for one in heat), but it was only when her tail continued to lift on its own did she begin to grow concerned on what was happening. Then out of no where she felt a spike of pleasure travel down to her marehood as the feeling of cool metal traveled from the cuffs, down the center of her back, and ending with a tight force wrapping itself around the base of her tail.

After the cuffs' tail strap was firmly in place at the base of Luna's tail, Celestia released her magic. And just like alchemy, Luna's tail was tugged tightly against her back, exposing her backside for all to see. The bound Alicorn yelped in pleasure as the force from her cuffed hooves kept consistent tension on her tail, simulating the feeling of it constantly being pulled. Celestia knew that Luna was over the moon for her tail being pulled as evidenced by her marehood winking from the arousing sensation, exposing her clit for just a moment before disappearing back inside its hood. Celestia smirked in success.

'All according to plan,' she thought to herself. To finally top off this delicious sundae with a cherry, Celestia got the ball gag and planned to secure it manually inside Luna's maw. As she got face to face with her younger sister, she noticed that the bound Alicorn was testing the strength of the bonds. As expected, she was firmly locked in place, even her wings. Celestia brought the ball gag around and lifted it up to Luna's face. The smaller Alicorn eyed it for a moment, then looked up at her older sister, expectant. The white sun goddess raised Luna's head slightly off the bed with her magic and gave a single, simple command. "Open."

Luna complied by opening her mouth as wide as she could to accommodate the rubber ball. Then Celestia promptly placed it into her mouth and secured the straps behind her head and underneath her ethereal mane. It honestly did not taste as bad as she suspected it to. She nibbled on the rubber sphere to assess its toughness. 'Soft, yet firm,' the dark Alicorn concluded.

Celestia brushed the younger sibling's mane back, soaking in how lucky she is to have a sister like her. She leaned down and kissed the tip of Luna's ear, causing it to involuntarily flicker. Celestia chuckled inwardly from the response.

"We are not going to do anything too outrageous tonight, but if you want this to stop at any point, for any reason, you either use your magic to tug on my tail, or send me a telepathic message, then with one spell everything comes apart. Understood?" Luna nodded in confirmation. Celestia smiled brightly at her sister and kissed her forehead. "Then let the fun begin!"

Celestia teleported from Luna's vision and reappeared behind her, an assortment of sex toys held aloft in her magic that seem to have manifested out of no where. Luna felt herself getting giddy with excitement in addition to the arousal that had been building up inside her thanks to the constant tension on her tail.

Celestia examined Luna's marehood and noticed that it was already drenched from her earlier ministrations and dripped the bound mare's essence in a steady rhythm. Since foreplay seemed moot at this, Celestia decided that the best course of action would be to start out slow, and then 'finish' off strong. She chuckled at her clever wordplay, then got to work.

Seeing her sister so worked up already made a small patch on the front of her dark blue panties even darker from her secretions. Celestia was focused on Luna though, her own turn would come later... literally. She leaned in close and took a deep, heavy breath of her sister's scent. As always, Luna's pussy smelled absolutely divine. The only way Celestia could describe it is if somepony had combined pomegranate and honeydew, then imbued her little sister's nethers with the savory aroma.

Being so close, Celestia could practically feel the heat coming off her sister's sex. She placed her stocking-clad forehooves on either cheek and felt the plushy softness of Luna's moons give a little as she toyed with them. Luna moaned into her gag and felt her arousal increase exponentially, both loving and hating the feeling of being played with while unable to move in this position. Celestia spread the cheeks in front of her after she had her fill of teasing her sister even further and stuck out a tentative tongue. She dragged her appendage along the perimeter of Luna's vagina, her muzzle getting soaked instantly from the mare's arousal. She made small delicate circles, and teased Luna's clitoris when it occasionally made itself known.

The gagged Alicorn's eyes rolled into the back of her head; the slow buildup being akin to torture. She felt as if she could burst at any second, but the peak was always just out of reach. Her eyes nearly bulged out of her head when she felt her sister switch from her marehood to her tailhole, teasing circles around it as well. In the past, the duo had never done much anal play as it felt too depraved, but Luna held off on saying anything just so she could see where this goes.

And, apparently, the answer was: inside her. Her sister. Her kind, wise, loving, caring, older sister, inserted her tongue as far as it could go into her ass. The way she wriggled it around and twisted it inside her rectum was a very odd sensation to her psyche, but not disliked. The lashing and writhing inside her was enough to elicit a soft groan from her, so Celestia assumed she was doing something right.

After a minute or so of licking her sister's insides, Celestia suckled on Luna's tailhole as she pulled away. An audibly salacious pop resounding throughout the room as she exited her sister's anus. Now she could tell Luna was thoroughly worked up, judging by her quivering backside, so it was time to drive it home. Looking down at the myriad of sex toys before her, Celestia chose a black, vibrating buttplug and a pink, 11-inch horsecock dildo with brown mottled spots for Luna, and kept a basic egg vibrator for herself. The white Alicorn smiled deviously as she firmly pressed the buttplug against Luna's tailhole. It slipped in with no resistance thanks to the prior loosening she did, and the lubrication.

Luna yelped into her ball gag as she barely had any time to relax when something else was forced into her butt yet again. Before she could register what the object was and adjust to it, the toy buzzed to life in her ass soon after it was inserted. The vibrations sent tingles all throughout her body and wracked her mind with a pleasure she had never before imagined. The buzzing teased her clit just the tiniest bit, sending jolts of electric ecstasy up through her stomach and to her mouth, resulting in a loud, extensive moan; the gag barely did anything to muffle it.

Celestia wasn't done there. The older mare took the dildo and rubbed it against Luna's pussy to get it properly lubricated. Once it had a bright sheen on every inch of the shaft, she pressed the tip against Luna's dripping sex and pushed. Luna moaned even louder around her gag as the intruder slipped in with ease and hilted itself at her cervix.

Luna was thoroughly stuffed, and she wasn't sure how much more she could take. She couldn't focus. She couldn't even think. The only thing she COULD focus on was the constant pleasure assaulting her backside. The horsecock was now in a steady rhythm of slapping against her marehood and hilting itself inside, kissing her cervix with every thrust. It seemed as if her sister had charmed the dildo to thrust itself into her.

The bound and gagged Alicorn could feel the faux phallus rubbing down the entire length of her vaginal walls, every rubber bump and ridge hitting all the right spots as it went in and out. Luna could feel drool leaking out around the gag in her mouth, her chin getting utterly soaked in the process. Celestia had also taken the liberty of slipping the egg vibrator inside her panties and pushing it against her own clitoral hood; the intensity set to low.

The sun princess could tell Luna was building up to a big climax. From the way she constantly moaned like a mare in heat to the way her legs quivered and twitched like they could give out on her at any second. She just needed a little extra push.

Celestia noticed that Luna's love button was now constantly winking with long intervals of exposure. Acting quickly, she clamped onto the little pleasure center with her lips and suckled delicately, teasing it with her tongue as she did so. Luna's eyes shrank to pinpricks as her vision went white. The powerful buzzing in her ass, the powerful, carnal thrusts of the charmed dildo, her sister's attack on her poor clit, and the position she was forced to maintain from her bondage overloaded her senses.

Her walls clamped down hard on the dildo that was still thrusting inside her. The first wave of a powerful orgasm rocked her core as it traveled down her womb, over the dildo, and was expelled from her entrance. The first spray hit Celestia directly in the face as she continued to suckle on Luna's clit. The older sister lit her horn and dispelled the charm, removing the dildo in the process. The sensations coaxed a second wave from Luna, this one more powerful than the previous. Her cum shot over Celestia's head and landed on the floor. A third wave soon followed, shooting out even further than the second and spattering against the wall, staining it.

Two more waves followed, going just as far as the third wave as the marecum began to drip down the walls and seep onto the floor. By the sixth wave, Luna began to come down from her mind-shattering orgasm with the seventh, eighth, and ninth waves being smaller and less intense. Finally, the tenth wave is where she was finally able to relax as one more spurt of cum hit Celestia right in the face, then she entered into post-orgasmic bliss. Her breaths heavy and labored.

Celestia released Luna's abused clit from her skilled mouth and lapped any excess secretions that remained on her labia after that intense orgasm she gave her. Then, with a deftly cast spell, the buttplug shut off and removed itself gently from her sister's ass, the straps and cuffs of her bondage released, and they neatly levitated themselves into the closet they had originated from.

Luna immediately flopped over on her side, mind and body completely spent. Celestia giggled heartily and removed the egg vibrator from panties, switching it off. She then shifted her position to be beside her sister and laid down on her side as well, facing her. Luna's face was one of pure happiness and orgasmic bliss. It was covered with sweat, had her mane matted to it, and had eyes that were too heavy to lift. Celestia couldn't stop smiling. It filled her with joy to know she could bring so much happiness and pleasure to her sister. She wiggled a little closer to the worn out mare and kissed her on the nose. Luna cracked open her eyes and smiled at the sight before her.

"So," Celestia began, petting Luna's mane, who nuzzled into her hoof. "How was the experience? Too rough?" Luna snorted and snuggled up against her sister, enveloping her in a tight hug.

"It was absolutely euphoric, sister." Luna spoke with a hazy, dream-like voice, almost like she had just woken up. She gazed into her sister's eyes. "When can we do it again?"

That question got a good laugh out of Celestia, especially since she couldn't tell if her sister was using the royal 'we' or not. She pulled Luna closer to her body so that they were belly to belly. "Whenever you wish. I only want to make you happy and show you that I love you. So much. So very very much. However I can." Celestia wrapped one of her tremendous wings over both of them and pulled Luna into the crook of her neck with a tight embrace.

"I love you, Luna. I love you with all my heart and soul and everything I ever will become. Everyday I worry that something bad might happen to you, and it will be because I was not able to act in time." Celestia paused to regain her composure. Sniffling and clearing her throat before continuing. "Like with our kingdom, I just want to protect you... But I know I should not baby you, either. I just could not live with myself if something bad happened to you. Especially if it was my own fault."

It took all of Celestia's willpower to hold back her tears. She didn't know where all this sentimentality was coming from, but she had lost Luna once and was given a second chance to make things right with her. She guessed that the dread of losing her beloved sister again would be the thing that breaks her. She heard a small sniffle come from her chest. Puzzled, she released Luna from the embrace just a little bit to get a better look.

Luna was not bashful about expressing her emotions at all. Her eyes were wide and watery as fresh streams of tears flowed out of her eyes and collected in her pelt as the widest smile she had ever made was plastered onto her face. Celestia reckoned it could match with Pinkie's smile on a "super duper, totally awesome, fantastic" day. Her words.

She wiped her nose with a wing and sniffled again. "I-I-I l-love you too, Celly. S-So much." She stopped to clear her throat, then continued speaking. "The thought of losing you plagues my mind as well. But I promise, you have nothing to worry about. I am not going anywhere. I will always be right here with you by your side."

The two Alicorns shared a deep, passionate, love-filled kiss as they got lost in their own little paradise. It was as if the world around them fell away into nothingness, leaving only the two mares to bask in each other's light. The kiss continued for a very long time, breaking away for only a fraction of a second before diving right back in. They both finally, and reluctantly, pulled away to catch their breath, peering into each other's eyes. This resulted in feeding the fire that fueled their desire for one another, so they went back in for one more kiss. Afterwards, they snuggled on Celestia's bed, cuddling and enjoying the comfort that the embrace from the pony they loved brought them.

Their hearts beat right next to each other inside their chests. The calm this brought them made their already worn out bodies, especially Luna's, even more drowsy and weary. They could both feel their eyelids getting heavier and heavier as the calming rhythm of their heartbeats only aided their tiredness, until eventually....

A few minutes passed before Luna realized she was drifting off to sleep. She bit the inside of her cheek to wake herself up, then she looked to Celestia, who was comfortably snuggling her. Eyes shut. "Celly, I believe it is time I reciprocated the pleasure you brought me, no?" Celestia snorted and shook her head.

"No, my dear sister. Tonight was about you. I had my fill during our intimacy, but tonight was really about showing you how much I love and appreciate you. That is why I went 'all out', as the young ones say, with this experiment. So do not worry about me, you will have your chance to reciprocate all you want tomorrow night. For now, though, I am content to just lay here and cuddle with the mare of my heart."

Her sister's words caused a fuzzy warmth to form in her chest, and then spread throughout her entire body, leaving her relaxed and only reinforcing the love she already had for her older sister. She never knew how much Celestia really sought her approval and wanted to show her the appreciation she had for the dark blue Alicorn. She was never aware that she made that much of an impact on Celestia for just being in her life. Luna smiled once more and snuggled back in with Celestia. The warmth from her sister's body and the giant wing covering her was too much for her already-heavy eyelids to handle. She allowed her realm of dreams to claim her mind as love for her sister swelled in her chest.

"Best performance yet," she whispered to herself as the synchronized beating of their hearts lulled her to sleep.