Mooncake

by TrixterCat

Rating: mature
Tags: Princess Luna, My Little Pony: Friendship is Magic, Comedy, Romance, Porn, Sex, Princess Celestia
Length: 4434

It is Celestia's birthday, and Luna has something special in mind.

Celestia and Luna, the royal alicorn sisters. Two ponies that are understandably close, but few ponies truly realize how close they are. And with Celestia's birthday just around the corner, Luna has an excellent chance to do something special for her sister.

Art belongs to Yomitai
Part of the April Incest Contest

Thanks to everyone who helped me with pre-reading and editing. :twilightsmile:

Published 2019-04-30 11:10:01 UTC
Last updated 2019-04-30 11:10:01 UTC

With Love

“Hmhmhmh, hmhmhmh.”

It was a rather peculiar sight to see Princess Celestia daintily skipping in the hallways of the Royal Canterlot Castle, her tail swishing excitedly from side to side and with a happy smile on her face. The many guards, maids, and nobles could only confusedly shrug at each other in the wake of the prancing pony princess, not that any of them minded the beaming smiles and jubilant greetings they received (with the sole exception perhaps being Raven, who had the misfortune of being on the receiving end of an alicorn level hug and a spin).

“Pleasant morn’ to thee, private.”

“Uuh, g-good morning?” the confused colt mumbled back, too baffled to realize that the Princess had already disappeared behind a corner when he found his voice again.

For most of the castle staff, Celestia’s behavior was an odd departure from her usual calm and motherly smiles. Gossip and speculation soon spread as to exactly what was the reason behind this, with many postulating that it must have had something to do with her protege, Twilight Sparkle. There were some who joked that perhaps today’s menu included an extra large piece of her favorite cake, and some few who suggested with grins on their faces that perhaps their Princess had gotten lucky last night. They were quickly reprimanded for their behavior, not that it in any way prevented the blushing ponies continuing that line of thought.

Then there was also Blueblood, who upon receiving the information immediately concluded that Celestia must have been swapped with a Changeling infiltrator, and that the Royal Guard must seize and examine her. He was swiftly bonked unconscious and dragged back to his room.

The reason for the motherly diarch’s uplifted mood, of course, was none of the above, and the few ponies who were in the know knew not to let the information past their lips, lest they incur the wrath of the mare in question and have to suffer great pouts and scolding frowns (and possibly, banishment to the sun).

The secret was, that today was Celestia’s birthday.

Her 1763rd to be exact, and while the depressingly large number did carry a certain amount of weariness for the Sun Princess, it was a day Celestia relished with all her being. Not only was her birthday a day when it was socially acceptable for her to eat a cake for lunch, but it was also one of the few days in the year that Celestia allowed herself a day off to spend time with the ponies she held dear and to simply relax, not worrying about the matters of the state.

The list of ponies who knew about the super secret birthday was surprisingly short for a head of state, but that was exactly how Celestia preferred it to be. As much as she loved all of her little ponies, they had an alarming tendency to go ‘slightly’ over the top with certain matters, and Celestia had no doubt that her birthday would be one of those if the date ever became public knowledge. She could only imagine how somepony would manage to convince all the rest that each and every single one of them should send the alabaster alicorn their birthday wishes. Or perhaps a present. Or, in the worst case scenario, endlessly sing ‘happy birthday’ to her all throughout the day. The exact opposite of what Celestia wanted her birthday to be.

Her smile widened as she thought about the ponies who would partake in the festivities with her today. Twilight, her protege, was naturally part of her circle, and would arrive with Cadence and Shining Armor later in the evening. As were Raven and Bright Light, her two most important aids, whom without Celestia would have been consumed by an avalanche of paperwork many years ago. The now retired Captain of the Royal Guard, Silver Aegis, also promised to make an appearance, and while he had the expressional capabilities of a slab of metal, his sense of humor that always managed to make Celestia laugh. Fancy Pants and Fleur de Lis, while never strictly having been told when her birthday was, somehow conveniently always managed to ask her to join them for a nice picnic in the early afternoon. There were a few others as well, but the business of life prevented them from visiting today.

Amongst all the guests, however, there was one that elevated Celestia’s spirit to even higher heights than the others. Luna, her sister, who had returned from a millennia of banishment just over a year prior, and thanks to the Elements of Harmony, had been purified from the corruption affecting her. Today would be their first true chance to have a little time and celebration together in amidst all their princessly duties and Luna’s ongoing efforts to adjust to the modern world and the weight of her crown once again. Luna had insisted that Celestia’s birthday party would provide a good bit of normalcy, a “touchstone we canst draweth from betwixt our exhausting studies and spellbound nights”.

Celestia’s gambol slowed down to a more regal strut as she recalled what her sister had continued with next, a tiny, fanged smile adorning her muzzle. “Besides, we hadst a surprise in mind for thee, dear sister. Wouldn’t wanteth to waste it, nay?”

The Sun Princess’ wings twitched and she licked her lips. Her sister had always been a trickster, even when they were just little fillies, so her promise of a surprise could mean any number of things. Celestia was not entirely sure if she had genuinely meant a surprise gift, or mayhaps something more...affectionate.

Being an alicorn was not always quite as wonderful as most ponies tended to believe. While there undeniably were some perks in having enhanced capabilities from each of the three great tribes, in the extended life span (if you counted that), in the cutie mark that inadvertently represented a primal force in the world and in the fabulous mane beyond mortal comprehension, there were some unquestionable faults as well. Namely, in nightly ventures under the sheets.

Not that it was not difficult enough already to get one’s fare share of amorous affairs as a Princess of a nation, but when you were nearly two times the height of an average pony, one’s chances of scoring plummeted beyond the most determined of Diamond Dogs (unless your name happened to be Cadance, and you were the Alicorn of Love. Celestia was only mildly jealous of that). Most ponies seemed to find it rather intimidating when a towering beauty of a Princess attempted to casually flirt with them, and Celestia’s usual motherly smile certainly did not help her romantic image.

This was something that had become plenty apparent for both of the regal sisters not too long in to their alicornhood. Not only that, but even when they would manage to seduce a pony and get to the point of inviting them to their bedchambers, Celestia often found the sex to be lacking. Most stallions were, quite frankly, too small for her, in every sense of the word, and while it was not fair to fault a stallion for not packing alicorn sized equipment, it did nothing about the awkward mounting positions and the distinct lack of fulfilling climaxes. It even made the elder alicorn ponder the benefits of celibacy on more than one occasion.

With the continued lack of a satisfying sex life beginning to mount up, it all came to a head during one night. It had begun with the older sister grumbling about her previous night with a stallion. While he clearly and passionately gave it his all, for the princess it only ever reached a level of ‘very pleasant foreplay’. This was followed by the younger sister lamenting she had not felt a lovers touch at all in the past month. Frustrated and stressed, the night blue alicorn had suggested, playfully, that “mayhaps we shouldst simply taketh care of each other”.

They had both chuckled at that, but the idea had taken root in the younger sister’s mind, and after another week of their needs going unsatisfied, she voiced the idea again. Only this time, it was accompanied with a seducing smile and a slow, alluring gait towards the elder sister. Coincidentally, that was also the day when Celestia learned that the sight of a horny and playful alicorn suddenly bouncing at you could freeze even the most steadfast of ponies. After that night, there was a noticeable improvement in each of the royal sisters’ mood.

Celestia ruffled her wings to dispel the mix of excitement and nervousness that had begun to bubble inside her. Whatever Lulu has planned, I’m sure it’s going to be memorable, she thought, picking up humming again as she headed out to meet with Fancy Pants and Fleur for their planned picnic.

********************

It was some hours later that the Sun Diarch returned to the Royal Castle with Raven and Bright Light, who had accompanied her to the picnic. It was refreshing to talk purely about this and that, mixed with a few juicy gossips. Even the walk there and back had been relaxing (at least, after the alicorn had applied a ‘Notice Me Not’ spell to herself).

Upon their return, one of the royal guards hoofed Celestia a message from her sister, asking her to join Luna in her chambers once she returned. The princess wasted no time, bidding farewell to her two aids until the evening and galloping off towards her sister’s bedroom, leaving behind two mares with amused smiles and one guardsmare in a need of a chiropractor. It was superb foresight that caused the Royal Guard to include a clause for ‘hugging related incidents’ in their health plans.

After a rather hasty retreat, Celestia slowed down to a canter. The excitement had gotten the better of her, and the white alicorn suddenly felt rather self conscious about having sped off like a foal running to a candy store. By the time she reached the tower where Luna’s chambers were located, Celestia was once again the epitome of regality, with a confident step and a slight smile on her face. And a rapidly wagging tail, but she was too preoccupied to notice.

“Luna? May I come in?” Celestia asked as she knocked on the darkened wood door. Instead of a reply, there was a just barely noticeable cyan hue on the surface of the portal as it clicked open. Ominous, Celestia thought as she stepped inside.

The Princess of Night’s bedroom was filled with deep blue colors, soft silks and fluffy carpets, some works of art, and many a fragrant flower. It made most ponies feel at ease the moment they stepped in, a perfect room for a dreamer. In contrast, Celestia’s quarters were more akin to a private study, with bookshelves full of tomes and volumes, bright colors, and comfortable pillows to help one read and learn.

Luna’s chambers were split in two: A smaller antechamber for studying and a larger area for her bed and wardrobes. Celestia navigated the study, idly surveying the numerous scrolls and books open on the tables she passed.

“Luna?” Celestia voiced again.

“In here,” came the reply from the boudoir.

“Luluuu, what are you hiding back he-” Celestia called out in a sing song voice as she moved past the silk curtain in the doorway that separated the two parts of Luna’s quarters, only to froze up when she spotted her sister.

The first thing the alabaster alicorn noticed, which she had registered even when she first entered, was the abundance of light. Delightful sunlight streamed inside from the windows, lighting the chambers up, whereas usually her sister would have preferred to keep the lighting more gloomy. Luna had excellent night vision and could see perfectly even with a little bit of light. Celestia had also smelled something in the air besides the numerous flowers, which turned out to be scented candles that were lined around the bedroom.

What Celestia had not been expecting at all, was her sister laying on a table on her back, hind legs lowered and fore legs tugged close to her chin and barrel, covered in numerous, small pieces of different types of cake. Across her barrel, stomach, and even balanced on her hind legs, was an assortment of delicacies that would have made Celestia drool if she was not frozen solid, jaw slightly ajar as she stared at the sight before her.

“Greetings, sister of mine,” the Night Princess purred. “Dost thou liketh what thee see?”

The Princess of the Sun could only blink in response, too baffled by what she was seeing. This stretched on for a while, and her sister’s unresponsiveness eventually began to make Luna nervous, making her fidget with her hooves.

“U-umm, we knoweth of thy love of sweet delicacies, a-and did want to dazzle thee with something special,” Luna mumbled awkwardly.

This finally shook Celestia out of her stupor. She closed her mouth with an audible click, but stayed in place. Slowly, as Luna’s fidgeting increased, Celestia’s expression turned to smile, then to grin, before giggles erupted past her lips.

“U-u-uhm...didst we doeth something wrong?” Luna asked, mortified at the response. This caused her sister’s giggles turn to laughter and she stepped forward.

“N-no, certainly not,” she replied with a guffaw. “I just… Luna, what are you doing?” Celestia asked with a exceedingly happy grin. Luna’s ears perked up upon seeing the happy visage.

“W-well, we hath asked ponies closeth to thee about what thee did like...”

“And they mentioned I like cake?”

“Verily, but we bethought mere pastry wouldn’t beest enough, and yond it did need something more.”

“This is certainly a bit different,” Celestia hummed in amusement, now curiously eyeing all the bits of cake Luna had prepared. There were various types of cakes at present, from ones with strawberries on top of them to lemon cakes and chocolate cakes, but what accentuated the display to greater heights was how stunning the Princess of the Night looked. She was propped on a large pillow, her mane loose and flowing down the sides like liquid night sky and her eyes were twinkling like stars as they playfully gazed at her sister. Celestia felt a small blush on her cheeks. “I notice that you are still using mostly old Equestrian. Have your language studies not gone well?”

“We findeth...find...it difficult to adjust our speech at times,” the blue alicorn replied, straining with some of the words.

“You will only get better when you train,” Celestia sweetly advised.

“We...shall try.”

“Now,” Celestia said, sitting down on a pillow next to the table, looking at her sister inquisitively. “Where did you exactly learn about...this?” she nodded at the array of mouthwatering treats.

“During our studies of other cultures and their history, we learned about a Neighponese custom where one dines on a feast atop a resting mare.”

I wonder in exactly which ‘history’ book that tidbit was in.

“Tradition wouldst have called for a more local food of rice and vegetables rolled in to small morsels, but we liketh the idea of cake better.”

“Indeed. And did your studies reveal anything else of note about this particular custom?” Celestia asked.

“That tho should leaveth the most wonderous treat for last,” Luna teased with a grin.

“I see. Then I’m sure you won’t mind if I start digging in?”

“Please.”

With a grin, Celestia leaned closer to Luna’s barrel. She eyed the treats for a moment, as if to decide which one to go for first, before quickly nipping one of them for herself. She noticed that there had been a small wrapper where the cake had been. With a brief flare of magic, it was moved away.

“Mmm,” the white princess hummed, slowly enjoying the treat. Once done, she leaned in to take another one.

“Is it to thy liking?” Luna murmured in to Celestia’s ear when she was close enough.

“It is very delicious,” came the reply before another treat was taken.

Celestia savored the second cake as calmly as the previous one, purposefully letting some of the whipped cream that had been on it to get on to her left cheek and lips.

“Oh dear,” she said, acting surprised. “Seems like I got some of the very delicious cake on me. Would you mind helping me with it?” Celestia said with a smile, and bowed her head.

“Certainly,” the younger alicorn giggled, licking the dollop of cream off.

“You are very kind.”

Celestia had purposefully left the piece that was closest to Luna’s neck untouched, but now went for it. She removed the wrapper with a burst of magic, and then ate the morsel whole, quickly chewing and swallowing it. She followed this up by planting kisses on Luna’s barrel, lazily moving upwards her neck. Luna craned her head back and let out a happy sigh, enjoying the attention. Celestia smooched her way all the way up to her sister’s chin, but stopped there and moved to eye the treats again, despite the pout Luna tried to give to her.

“I have to say, sister of mine, that these cakes are truly wonderful,” Celestia teased, purposefully trying to look like she was enamored by the treats. The Princess of the Night gave her a friendly punch with one hoof.

“We hadst some help from the cooks.”

While eating a another piece of cake, Celestia extended one of her wings out and brushed it against Luna’s side, who tried her best not to flinch. While she ate the next few, the white alicorn continued her steady motion with the wing, but also made sure to plant kisses and nuzzles at each spot now left without a treat. Luna had hard time suppressing her giggles and flinches, and eventually had to use her magic to make sure that the cakes would not fall off of her.

“Oh pardon me, it seems I have completely neglected you,” Celestia suddenly bemoaned. Luna’s tail wagged once before she could stop herself. “Surely, you would want one of these incredible treats to taste as well.”

Luna began to pout again, but perked up when Celestia carefully picked up the next cake in line with her mouth, and presented it for her to sample. She reached and plucked it out with her lips, giving Celestia a perfect opportunity to plant kisses all over Luna’s lips and nose, while simultaneously running her other wing across the slender, blue hind leg.

The Sun Diarch continued this while Luna chewed, and when she threatened to pull her head away again, Luna reached with her forehooves to bring Celestia’s head against her barrel. Celestia nuzzled against Luna, inhaling her sister’s scent, and relaxed in to the embrace, tucking her head under Luna’s chin. After a few moments, she began planting kisses again on Luna’s neck, this time moving downwards. She nuzzled and kissed, giving a few playful bites as she went down Luna’s barrel and stomach to the next piece of cake, which she hungrily ate.

“Seems like I made a mess again. There’s crumbs in your fur.”

“Favor for a favor…” Luna murmured.

Celestia smiled, and began to lick the crumbs off of Luna’s stomach, making long runs with her tongue as if she was grooming her sister. The Moon Princess gave a few quiet giggles and moans, her wings fidgeting to extend, but she fought the urge. Whilst licking, Celestia used her magic to remove some of the remaining pieces of cake and set them aside. She did not want to tease her sister too much, after all.

Then again, Celestia though as an idea formed in her head. With a brief use of magic, she scooped some of the icing and chocolate from some of the pieces of cake, and carefully covered the tip of the night blue alicorn’s horn with them.

“Dear sister, it would seem that in all of your baking, you managed to get some on your horn,” Celestia faux scolded, lifting her head. Without waiting for a reply, she laid her form across Luna’s so that she could reach her horn, and catching on, Luna powered her horn, and wrapped her forelegs across her lover. With a few deft licks the horn was clean again, but instead of stopping, Celestia enveloped the tip of the horn with her mouth.

Normally, horns were not particularly sensitive, as they were mostly bone after all, but that changed during spell casting. While there was magic gathered in one’s horn, it could feel sensations just like a limb, with the exception that since most ponies were unaccustomed to ‘feeling’ with their horns, the sensations could be quite intense.

Luna closed her eyes and panted heavily as Celestia gently licked, sucked and nibbled at her horn, taking turns to run her tongue up and down the bony shaft and taking as much of it in her mouth as she could. It did not take long for there to be a sound of ‘poomf’ as a pair of wings sprang open.

Celestia continued her ministrations for a minute, before slowly, teasingly, pulled away. She planted a quick kiss on Luna’s nose before she turned her attention to the remaining few treats still laid on top of her sister: One on top of her hind leg, and one in between them.

Celestia waited until Luna had recovered enough from her horn job to be able to pay attention again, and began by kissing Luna’s belly, and every now and then let out a little growl and gently bite as she went. She also laid her left wing on top of Luna’s, their feather’s entwined, and use the other to caress her hind legs and rump. Celestia could hear quiet murmurs coming from her sister, and feel her leg twitch as she reached it with her pecks. Once she reached the treat, Celestia quickly chomped down on the cake, before using her wings to spread Luna’s legs apart, shifting her own position as well so that she could see the main course of the meal better.

“It looks like somepony is happy to see me,” Celestia giggled in delight as Luna’s soaping wet marehood twitched and winked at her. There was a small twirl of whipped cream and a single cherry delicately placed right on top of Luna’s mound, just waiting for her, and Celestia was not one to disappoint.

With a hungry growl, Celestia grabbed Luna’s hind legs with her fore hooves, lowering herself down so that she could mercilessly attack the final treat. She ran her tongue the entire length of Luna’s pussy, flicking her tongue against the clit and catching some of the whipped cream, before repeating the motion. Luna moaned loudly, her tail curling around Celestia as she kept licking.

“Hard’r,” Luna pleaded, but Celestia kept her pace, slowly working to get rid of the cream and the cherry.

“Impatient?” Celestia teased while she ate the cherry, using the lull to knead Luna’s rump with her hooves.

“Oh moons and stars, prithee doth not stop…”

If Luna had been able to see the grin on Celestia’s face, she might have been able to brace herself, but in this case, her eyes were closed, and she was fully focused on the hot breath that pelted against her nether regions. As such, she could only howl in ecstasy when Celestia buried her muzzle in her marehood and plunged her tongue as far as it reached. Celestia tongue explored all the folds of Luna’s pussy, licking and stroking all the right places that it so expertly knew. Luna squirmed in her sister’s grip, at the same time attempting to escape the intensity of the pleasure and pull Celestia as close as was physically possible.

“S-s-sisteeer,” Luna cried when she felt her inevitable climax approaching. Hearing this, Celestia pressed her lips against Luna’s clit, and sucked.

Luna screamed as she came hard, arching her back and her wings thrashing against the table. Celestia held on to Luna’s legs, sucking and lapping up all the love juices that poured out of her sister. It felt like the white hot pleasure lasted forever, but mercifully, the orgasm eventually subsided, and Luna fell back on to the table, gasping for breath.

Celestia continued to gently kiss her sister’s twitching marehood for a few moments more, before getting up and kissing her way up Luna’s body, planting a quick peck on to her lips and smiling down at her as she recovered.

“Thank you Luna, for your delicious treat,” Celestia said and brushed Luna’s cheek with her wing.

“Th-... Thou art welcome,” the Alicorn of the Night murmured back, reaching out with one foreleg, which Celestia grabbed and idly pettet as they let the minutes pass. Celestia opened the nearby window with her magic, and an errant gust of wind came in, pleasantly caressing the coats of the two alicorns. A strand of mane fell on to Luna’s muzzle, making her sneeze. Celestia giggled.

“We bethink it prudent yond we clean up,” Luna eventually continued.

“Truly? And you would leave your older sister unattended while you get all the pleasure?” Celestia asked in mock horror. Luna’s wings ruffled in excitement.

“As we remember, showers can beest a fun place to relieve one’s stress,” Luna suggested with a playful bat of eyelashes. Celestia smiled at the comment, turning to look at the clear skies outside.

“Tempting,” Celestia said and grinned, grabbing some of the whipped cream still on the remaining cake pieces with her magic. She brought it to Luna’s face, and smoothly added the dollop right onto the tip of Luna’s muzzle, leaving the younger sister cross eyed as she tried to focus on the delicious drop. Before she could as much as open her mouth, Celestia had leaned in, and licked the cream off, planting a kiss in its place.

“However, I think I shall wait until the night falls, and then…” Celestia purred with delight, resting herself on top of her sister. There was a flash of magic, and Luna could see something floating in Celestia’s magic. It had the distinct, phallic look to it, and appeared to be strapped to a belt. “...those delicious flanks of yours are mine,” Celestia said, gently grabbing Luna’s face with her forehooves and leaned in close enough that their muzzles were touching.

Luna, the Princess of Night, and the Mistress of Dreams, could only blush furiously.

Author's Note

Oh look, it's more lewd words. Hopefully y'all enjoy the story. :twilightsmile: