Guilty Sister

by Violet Sky

Rating: mature
Tags: Anthro, Princess Luna, My Little Pony: Friendship is Magic, Romance, Sex, Comedy, Princess Celestia
Length: 6611

Princess Luna grows suspicious of Celestia's behavior thanks to a letter from Twilight completely unrelated to the sisters. She decides to take time to bond with the sun princess, but things don't quite go as planned.

All thanks to a letter that was completely unrelated to the royal sisters, Luna begins to question Celestia's secluded behavior one night while she was alone. She begins to wonder if it may have had to do with her sister's inactive love life.

Only one way to find out.

While Hearts and Hooves day is quickly approaching, Luna decides to get her sister alone to to question her. What happens next will change their relationship forever.

Published 2015-01-11 05:50:01 UTC
Last updated 2015-01-27 04:14:12 UTC

The Truth

Dear Princess Luna

In my recent encounter with Discord, he was a little edgy around us. It was odd at first, but I shrugged it off, thinking it was just Discord being Discord. But as I watched him, I began to notice a pattern. He would shy away from me and most others and hide away at Fluttershy’s cottage. It wasn’t until I did the stupid thing of prying in on something I had no business in when I found out Fluttershy was helping him overcome his emotions.

Apparently after the results of Tirek’s defeat Discord began to hold friends precious to him, but he was so conflicted by his previous feelings that it withdrew him to the point of timidness. I had never seen such an emotionally distraught creature and it upset me.

I learned my lesson the hard way that one should trust their friends to do what’s right, even if that one friend is Discord. You’ll never sleep right again when you see the god of chaos cry. Tartarus must have been horrid.

Though, on the bright side, all six of us are now dedicated to helping him overcome his feelings. He’s making great progress.

P.S. Discord proposed to Fluttershy!

Your faithful friend and fellow princess

Princess Twilight Sparkle.

Princess Luna smiled at the letter her sister’s previous student had written. She could tell it was done in Spike’s handwriting, but it still sounded exactly like Twilight in her head. It was expected, after all. It was pretty late at night and she knew how long Twilight would sit awake reading. The poor mare was probably so drowsy that she couldn’t even hold a quill.

The princess sat back in her throne and sighed. Now that she wasn’t slouching over the letter, one could get a better look at her.

Luna, like her sister, wore a long, draping dress that matched her element. The silk it was made of was enchanted to reflect the night sky in the blue material, giving it almost the same look as her mane and tail. Around her neck was her traditional silver necklace with a diamond crescent moon pendant on the front.

To any pony around she would have been the epitome of beautiful, but her tomboyinshness wouldn’t allow things like dresses for more than one or two nights a week. The rest of the time, she would wear civilian clothing. Still, what she wore only complimented her gentle curves and cute, petite body.

Today was one of her days to wear a dress and she didn’t mind it.

“Hmmm… Discord has emotional problems from the past… I wonder.” Luna drew her legs up and propped them over the arm rest as she lied down across the other, completely without a care in the world. After reading the letter, Luna began to remember Celestia having a similar withdrawn behavior ever sense she returned from the moon. “I do wonder if my sister may suffer from such emotions as well... “ She thought out loud. "She did, after all, ban me to the moon... Perhaps guilt?

It was true that Luna’s own emotional problems have been taken care of, but her sister was a different story. Every time Luna would ask her about trying to find somepony special, or a good friend to talk to, Celestia would change the subject. Even when Luna herself offered to talk to her about it, the conversation was avoided.

Luna chewed on her lip as she thought. Things between her and Celestia were, of course, never the same, but Celestia seemed to soak up all the issues like a sponge. But exactly how full is that sponge? How long until it leaks or becomes so dirty it can no longer be used? These were scary thoughts to Luna, because that’s exactly how the night princess acted before she became… ‘that mare’.

Luna stretched her arms over her head as the constant churning of her thoughts stiffened her muscles with stress. The action accidentally gave one of her night guards at the far left of the room a glance down her dress at her cleavage. His nostrils bursted with blood and he collapsed on the floor next to his partner, who hadn’t had the pleasure of seeing what his friend had. The stallion was carried out without Luna even noticing.

“Then there was something else Twilight had said… Discord had proposed to Fluttershy.” Luna said to herself as she stared up at the ceiling. “Maybe if I could get her alone, I could get her to tell me what is wrong... Maybe she is just trying to hide a suitor from me... Yes, that must be it… She is hiding the fact that she is in love with somepony.”

Luna chuckled as a plan began to form in her mind.

“Luna, you know how I feel about you staying up all day playing video games.” Celestia groaned as she and Luna shared tea together the next afternoon. Celestia was wearing her usual gold trimmed white dress, though it was her one favorite version of it. It was the only one that had a sun in the same shape as her cutie mark on the lower part of the skirt.

Luna shrugged off the comment. “I assure you, dear sister, that it creates no problem for me. If anything it let’s me sleep better the next day.

Celestia rolled her eyes. “But don’t you think that might catch up with you one of these days? I don’t mind taking over the night every now and then, but your health is still my concern. I am your older sister, after all.”

“No, Celestia. It is not. You worry about me too much.” Luna argued. She lifted her cup to her lips and took a proper sip. Despite how she felt about many other royal traditions, tea with her sister was always proper. She wouldn’t have it any other way. She set the cup back down on it’s little dish and continued what she was saying. “I would rather it be the other way around for once. I will take the day tomorrow. I have something I want to do with you.”

The sun princess looked taken back by Luna’s response. She blushed and avoided her sister’s eyes. “Luna, I’m flattered, but that won’t be necessary. I… have too much work to do.”

“Nonsense. You work yourself too hard. Let me take the load for once. You cannot shelter me forever.”

Celestia made to argue, but her maw was held shut by Luna’s magic. Her eyes widened at the night princess.

“I will not take no for an answer, Tia.” Luna said assertively. She took another sip of her tea, not even looking at her sister’s shocked expression. In her own mind, Luna was laughing. ‘Oh, yes. This is going to be so good! I can not wait to hear who she has been crushing on!’

After her maw was released from it’s bindings, Celestia looked away. “F-f… Fine.” She stuttered.

“Excellent! Now I can tell you what we are going to do.” Luna said excitedly. She was positively giddy. She had a chance to hear her sister’s secrets all alone where nopony will ever hear. “I wish to bond with you more, so I thought we would rebuild our old bed chambers so we may have someplace to escape when the stress of a kingdom gets to us.”

Celestia spit out the tea she had just taken a sip of. She sputtered and coughed a few times, but managed to regain control. “W-what? The old castle?” She exclaimed. “Luna, I-I know you’re trying to be a good sister, but... I seriously don’t think this is... n-necessary.”

Luna was confused as to why Celestia was acting this way. “Why not, sister?” She asked. “I think it would be fun. Are you feeling well?”

“I-I’m fine, Luna. I assure you. Just… I don’t think it would be a good time to do this. I-I have so much work to do.” Celestia tried to resist.

The night princess narrowed her eyes at her elder sister. “Princess Celestia Von Cosmos. You are going to relax and enjoy my company tomorrow. It will be Hearts and Hooves day soon and I will not let you spend it alone in your chambers again. You would not want me to use the cake on you again, would you?”

Celestia gasped. “N-no, not the cake. Anything but that! I couldn’t stop eating it for a month! Whatever you did to that double chocolate cake caused a sensitive addiction to it...” She whined.

Luna smiled deviously. “Good, then we are agreed. Us sisters shall bond the way we used to when we were but fillies.”

“Huh… I would have thought the structure had failed long ago, but I guess the preservation spells held our chambers together quite well. I hardly notice a difference. Not even dust.” Luna said to Celestia as they stood in the center of the royal bedchamber they used to share as fillies. Though their belongings were no longer there, they could easily conjure up a spell that could fix that. The walls looked the same as they always had, gray stone with two windows cut through the far back walls.

“F-father always said that a castle is supposed to out last it’s rulers...” Celestia replied. She had been strangely timid and quiet the entire time they had been there. It was as if she was afraid somepony was watching her.

Luna did notice, but that only confirmed her suspicions. Thanks to Twilight’s letter, she was prepared for the symptoms. “That is right, he did. Father placed time capsule spells on the structures of the most important rooms. I watched him do it myself. He always told me my curiosity was enthralling, but I would need to control it.” She said, trying to keep a conversation going.

Celestia slowly nodded. “He was full of riddles.”

“I think he was testing us.”

“You found some of his riddles annoying.” Celestia pointed out.

Luna laughed. “Indeed I did. Now what say we start turning this place back into something comfortable.”

The elder sister took a deep breath and nodded. “Ok…”

Within moments, the two royal sisters were at each side of the room decorating their personal space exactly as they had remembered it. Luna, though still keeping most of her old furniture, gave her own space the upgrade of four game systems and a flat screen tv.

Celestia shook her head in slight disappointment when she had found Luna trying to run a magic drop cord all the way back to Canterlot to plug in her devices. “How did you ever survive before?” She asked in a sarcastic voice.

“Easy. I was focusing on dreams. Now I let some ponies have nightmares. It must happen sometimes.” Luna replied innocently.

“Well… D-did you at least bring that one game I like?”

“Of course.”

Celestia sighed and sat down next to Luna on the floor. She crossed her legs and and held out her hand to Luna. “May I have a controller?”

Luna levitated a black controller into Celestia’s hand. She then smiled and loaded the game into the required system.

“That was fun, Luna.” Celestia said with a laugh. She was sitting on her respective bed, which was decorated with red drapes over the bed itself. The blankets, though, were a gold silk. Celestia herself was no longer wearing her dress, instead wearing her white nightgown.

“That it was.” Luna chuckled. Unlike Celestia’s nightgown, what she wore was more... revealing. Her outfit was comprised of only a pair of black lingerie panties and a black sports bra. She was also sitting on her own bed across from Celestia’s, her’s having been decorated with dark blue drapes with small crescent moons dangling from the edges. Her blankets were black and covered with stars.

“Did you really mean to run over those pedestrians?” Celestia asked with a devious grin.

Luna stifled a laugh. “Maybe… But that still does not compare to what you did, sister. Blowing up a gas station during traffic.”

“Oops.” The elder sister replied playfully.

The two princesses burst into laughter. It brought so many memories of the good times they used to have when they were much younger. That one thought, though, made Luna stop laughing. She sighed and looked down at the floor. “Um… Tia?”

Celestia wore a concerned look as she gazed at her younger sister. “Is everything alright?”

“N… No... No, it is not alright. There are too many times I have seen you act like before.”

“Luna, what are you talking about?”

This was it. This was her chance. It was now or never. “Celestia… I… I know what I did in the past is unforgivable, but not speaking about it to me and bottling it up will only turn you into somepony you are not. I… I should know...”

“So that’s what this is about?” Celestia asked in a surprised voice.

“I am sorry for prying, but if there is anything your student has taught me, it is that friendship is not just about the ponies you have met, but it is also about your family. Tia, you are my family and my closest friend. If anything were to happen to you, I could never forgive myself for letting it happen. Yet you go through it every day. It makes me hurt for you, sister.” Luna looked up at her sister. There were tears starting to run from her eyes. “I regret what I have done to you and I know I will never be able to escape it, yet you still hold part of my burden.”

“L… Luna… It’s not-”

“Tis our fault!” Luna cried suddenly, her emotions making her lose control of her voice. “Do not stress thyself with worrying about us... We do not deserve your pity...” Luna was suddenly caught off guard by a pair of arms grabbing her and pulling her into a tight embrace against a soft chest. She tried to struggle, but Celestia just held her. Luna soon gave up and cried against her sister as she was held, letting out all of her emotions.

For a long moment, Celestia simply held her younger sister against her. Even after Luna had stopped crying.

“Y-you… you can let go now…” Luna said weakly.

Celestia released the younger alicorn from her embrace and gave her a concerned look. “Are you ok?”

Luna nodded and wiped her eyes.

“Luna… What you said isn’t true... You are not a burden. Don’t you ever call yourself a burden in front of me again or so help me I will ban you to the moon for a week.” Celestia stated firmly.

Luna shrank away, but nodded again.

“The truth is… I am the burden…” Celestia looked away from Luna’s eyes. “I’m not like I used to be, Lulu… Yearning to see you again after a thousand years drove me to push every potential suitor away. I… eventually got to the point when I found no desire in anypony. Not even when I tried mares. Nothing. No love, no desire, no passion.”

“But… wh-why didn’t you tell me?” Luna questioned. She could easily tell that Celestia was getting more and more uncomfortable as she spoke, but she did nothing to stop her.

“Because… the pony I fell in love with…” Celestia paused and swallowed loudly. “I… I fell in love with... “

“Who is it?” Luna asked in a soothing tone.

“It’s… i-it’s…”

“Who is it!?”

“It’s you!”

Luna blinked in surprise. “What?”

Author's Note

No clue where the hell this came from. I actually had just started this today. Hope everypony likes this. It would have been a one shot if I didn't have a personal ban against writing less than two chapters.

Passion's forbidden Fruit

Luna mentally reeled at what her elder sister had revealed. She shifted uncomfortably on her bed. Had Celestia really just revealed what she think she had? Luna couldn’t quite tell. Her thoughts were so jumbled from the mental blow that she couldn’t even form words to reply or even question what had happened.

Celestia, though, was reacting far worse. She was visibly fidgeting with anxiety, sweat forming on her forehead as she waited for Luna’s response.

“W-when… when did this all start?” Luna asked, finally breaking the silence.

The elder mare jumped at the question, as if she had been startled from a bad dream. She laughed nervously and sat down next to Luna, before replying. “I guess I could start with how I ruined my life...” Celestia said weakly. “It was not long after I sent you and that other mare to the moon. Mother was quite upset with my choice and severed my connection to the elements as punishment.”

Luna’s eyes grew wider. “So that is how you could no longer control them… But did that not cause problems with keeping peace in Equestria?”

Celestia sighed and slowly nodded. “Indeed it did… After I lost control of the elements, I began to feel the other mare every time I raised the moon. It made me hate myself. I had banished my own sister to the moon with a monster inside of her and no way to help her. One does not simply recover from the sheer amount of guilt and self neglect I went through.”

Luna placed a comforting hand on Celestia’s shoulder. “If it makes you feel any better, I have no memory of ever being on the moon. Nightm-...” She stopped herself. “The other mare holds all of the guilty memories. I retained very few.”

The sun princess gave her younger sister a thankful smile and visibly relaxed slightly. “Thank you, Lulu… That does make me feel a little better.”

The younger sibling returned the smile. “Tis what sisters are for, is it not?”

Celestia’s smile faded. She looked down at her hands and clenched her fists. “If only I would have been a stronger princess. All of this could have been avoided.”

“Tia, do not berate yourself.” Luna pulled the elder mare into a comforting hug. “The past is behind us. We must worry about now and the feelings you have acquired.” She let go of Celestia and looked her straight in the eye. “Now how did your attraction to me begin?”

Obviously even less enthralled by the new subject, Celestia sniffled, but didn’t shed the tear she was so obviously holding back. “About two hundred years ago, I banned any and all possibilities of a suitor… That was after my mishap with a young mare, named Milkyway. She couldn’t handle my emotions when we were alone, so I let her go and never tried again. After that… I began to miss having somepony around to keep me comfort; to hold me like a lover is supposed to. Then I began to miss you again. With nopony to stop these emotions, they festered like a wildfire and began eating me alive every minute of every day. The simple yearning for your company slowly grew to a dull ache, then a burn. Before I knew it, I was fantasizing about waking one morning to find you naked under my blankets…” Celestia blushed and looked away in shame. “Y-you can guess fairly well what happened next…”

Luna’s jaw had gone slack and her mouth had gone dry. Her elder sister had just admitted to having wet dreams about her. The strange part was… this only quirked Luna’s curiosity. Without her even thinking much about it, a plan began to form in her mind, as well as a backup in case something were to happen.

Luna slowly leaned toward Celestia, her heart racing as she ran the plan through her head one more time. It was now or never. “Tia… Can you tell me about your dream? I want to know what I mean to you.” She whispered into her sister’s ear.

Celestia shivered at the words that rolled so well from Luna’s tongue. She looked back at her younger sister with a surprised expression on her face. “W-what?”

“Tell me about your fantacy, sister. I want to know everything.”

“Why?”

“Because I love you and I want to help you.”

Celestia lost absolutely all control of herself. She suddenly snatched Luna by her shoulders and yanked her into a kiss.

Luna’s eyes went wide with shock at the sudden movement, but didn’t at all fight it. It was as if something was telling her this was right. Everything everypony had ever told her about finding the right pony happened all at once. The fireworks in her head, the butterflies in her belly, the drumming in her heart. Luna’s eyes slowly rolled back as she began to enjoy the contact. Her sister’s lips weren’t at all undesirable after all.

Though none of that changed how wide her eyes still were.

The moment Celestia finally broke the kiss, Luna’s expression was noticed. The elder princess gasped, reeling in disgust at what she had done. “Oh, by the sun, I am so sorry, Lulu! I-I don’t know what came over m-” She was cut off when a blue flash of fur tackled her down onto the bed, pinning her against the bed.

Luna gazed down at her sister with lust in her eyes. She slowly licked her lips as just a tease for what was running through the night princess’ mind. “Now I know why I could never see your dreams. You were holding out on me, Tia. For shame.”

Celestia could only sputter what could only be classified as an attempt to question what had just happened.

The dominant mare giggled. “Oh, come now, Tia. You must know by now that I am quite the fan of most fetishes.” She leaned down and brought her lips to Celestia’s ear. “Incest just happens to be the one fetish that not many get to experience outside of a dream. I quite enjoy the idea of ‘playing’ with my sister after so long without the touch of another pony… But only if you are ready to bite the fruit you have grown.” Luna knew she had Celestia in her hands like putty and it was only a matter of time before she would break.

“L-Luna… Wh-what’s… gotten into… you?” Celestia strained to say. She struggled against Luna, but to no avail. She was trapped with her desires waiting to explode from her in the form of a dirty sin against what she thought was right.

“Oh, nothing quite yet, dear sister. Nothing quite yet.” Luna cooed. “But since you are going to be a stubborn mare, maybe I should give you a preview.”

“Wh-what… do you… mean?”

Luna smiled deviously and placed a binding spell on Celestia’s wrists and ankles. She then grabbed the collar of Celestia’s nightgown and began ripping it down the front.

Celestia gasped, watching helplessly as her clothing was ripped from her body. “L-Luna! That was my favorite nightgown!”

The younger mare only giggled as she undressed Celestia further. She tossed the ruined nightgown away, before proceeding to reach for Celestia bra strap, yanking on it until that too broke. She tossed that aside as well.

With Celestia’s breasts now exposed, Luna could marvel at their bountiful offerings. She licked her lips at them. “Over two thousand years we have spent together and not once have I laid eyes on your naked adult body. Ever since you were of adolescent age, you would hide yourself from me. I now know what I was missing out on.”

Celestia blushed deeply. She was visibly shaking, but not with fear nor anxiety. It was with excitement. Her deepest desire was ripping her clothes to shreds while she was helpless to the lust. It drove her mad with desire and she hated herself for it, but it was Luna herself who was pushing. “C-come now, Lu… We can… work around this…”

“I would rather we face this issue head on, dear sister. I would hate for you to be pent up any longer. Just relax… I do not bite... much.” Luna whispered to her sister, lust heavy on her voice. She then slowly licked up between Celestia’s breasts, making the fur stick up as her tongue trailed across her chest.

The receiving mare whimpered, squirming from the tease. The gentle action caused a wet spot to form on Celestia’s pink panties.

“I can tell I am exciting you…” Luna whispered into Celestia’s ear. “Just give in… We can be so much more than just siblings…” She grabbed both of her large breasts and massaged them for emphasis.

Celestia had to bite her lip to keep from squealing at her sister’s touch. It was becoming too much for her and she knew it. Her will was beginning to falter. With the last of the fight Celestia had left, she mentally cursed herself for having these feelings for her little sister, for being too weak to fight them off.

And with that, Celestia gave in to her feelings. She stopped fighting against the bonds and gazed up at Luna with lustful eyes. “Fine…I give up… I… I need you, Luna.” She panted out, the struggle from before having worn her down.

Luna smiled. She gently brushed her hand across Celestia’s cheek, pushing back a lock of her flowing prism mane. “That is what I want to hear.” She whispered lovingly. With that, the mare began to crawl down Celestia’s hourglass figure and released the binding spell on her ankles. She grabbed the elder princess’ thighs and lifted them, spreading her wide enough to comfortably reach every sensitive spot she knew a mare could have. It was then that she noticed the large wet spot on Celestia’s panties.

“Excited, are we?” Luna cooed.

Celestia bit her lip as she helplessly watched Luna take advantage of her. She quickly nodded, barely able to contain herself, despite the binds on her wrists. It was a struggle not to just break the spell and pound her younger sister herself, but she controlled herself, for the time being at least.

Luna made quick work of Celestia’s final piece of clothing, slipping it over her thick thighs, then the rest of the way down her smooth legs, before yanking them from her hooves. She tossed that to the side with the rest of Celestia’s clothing. With the cloth barrier now removed, Luna could admire her elder sister’s perfect pink lower lips. The sensitive pink flesh was mesmerizing to the point of making Luna’s mouth water.

“L-Luna! P-please don’t just stare at it!” Celestia whined. She wiggled her hips to try and work herself closer to her younger sister, but to no avail.

“Well, what does my dear sister want me to do?” Luna teased.

“I… I want you to make me… c-cum… Lu. P-please make me cum! I need it! I need you! P-please!” Celestia begged, helpless to her sister’s teasing. The suspense was driving her crazy. She needed her sister’s touch, as if she would die without it.

Luna giggled. “Oh… I guess I could do that.” She lightly stroked her hands across Celestia’s cutie mark. “But you have to promise me something.”

“Anything… anything!” Celestia cried.

“I want things between us to stay like this. I love you, Tia. If this is how you really feel about me then do not hold it back. The moment you agree to my terms, I release your wrists and my body is yours to do what you will with me, but if not, I will stop now. I will act as-” Luna was cut off when she felt the binding spell break. The next moment was a blur, but soon she found herself pinned beneath a lust driven Celestia.

“I agree you your terms, my sexy little sister.” Celestia slowly ran her tongue over her lips.

Luna blushed deeply, a squeak barely leaving her lips.

Like the sex starved princess she was, Celestia went to work quickly. She dove down and began nibbling Luna’s neck as she began tearing off her clothing, just as Celestia’s had been.

The night princess could only squeek and moan as she was taken advantage of. It wasn’t long before she was lying there naked, but she didn’t care. “T… Tia…” She moaned. “Take me…”

“Gladly…” Celestia whispered heatedly into the younger alicorn’s ear. She slowly began kissing down Luna’s slim body. First, her supple breasts, making sure to take the time to suck and nibble each nipple. Then her smooth stomach, where she playfully licked Luna’s belly button. Then finally just above princess’ tender clit. “When I’m done with you, you will eat me out until I tell you to stop. Understood?”

Luna quickly nodded, biting her lip to stifle her excited whimpers. She could feel Celestia growing closer to her ultimate prize and she grew hotter the close she came.

Then it finally happened. Celestia finally placed her lips against Luna’s tender love nub and sloppily kissed it. Suddenly Luna gasped, euphoria spiking through her system.

“Oh? From just a kiss? My, Lu. You may need this more than I do.” Without warning, Celestia dragged her tongue along the moist slit. It was teasingly slow and Celestia enjoyed every second of it.

Luna was hysterical, the teasing lick making her squeal with pleasure. She clawed at the sheets of her bed, unable to control the noises she made. She felt like a virgin again and she loved it.

Celestia grabbed Luna’s thighs and spread them, before diving right back. She began lapping skillfully at Luna’s tight folds, knowing exactly what parts were the most sensitive. With each time her tongue made contact, she was overwhelmed with desire for her younger sister, the forbidden taste making her lose all sense of control.

The receiving mare was in such a state of bliss from her sister’s actions that she could no longer even speak. Her loud and needy moans began to fill the room as their moment continued. Oh, by the moon, why hadn’t they ever done this before? The other mare would have never existed if this was how their relationship had been a thousand years ago.

Luna squealed in bliss when she felt Celestia’s skilled tongue slip between her tender lips and grind against her walls.

Celestia greedily slurped at her sister, not wanting to miss a single inch of her delicious offerings. The sweet nectar that leaked from the pleasured mare was but fuel for the burning flames of passion that raged within the elder mare.

She pulled apart Luna’s tender lips with her thumbs and thrust her tongue deeper.

The night princess squealed even louder. It had been so long since anypony had touched her that just a few moments of foreplay brought her dangerously close to her climax. Her sensitivity to Celestia’s movements spiked, her desire for her elder sister strengthened, and her utter need for a sweet release took her mind by force.

Celestia’s tongue felt amazing to Luna, the way she licked and slurped at her insides was like anything she had ever felt before. A thousand years of skill made an absolute difference and whoever said otherwise could kiss her big, round full moon.

Celestia pulled her tongue out and began licking at the tender lips themselves.

Oh, how that drove Luna crazy.

As Celestia circled her tongue across the tender flesh of the tight opening, Luna reached her peak. And as the sun princess reached her goal, Luna was shot straight to cloud nine. The night princess came like a dam bursting at the seams. Her pent up juiced squirted out of her, soaking Celestia’s lips and tongue in her juices.

The sun princess pulled away, licking her lips. “That was quick, Lu. Don’t tell me you haven’t slept with anypony since you’ve been back from the moon.”

Still unable to speak past her panting, Luna just shook her head no.

“Awww. Poor Lulu. So you’ve been pent up too.” Celestia crawled back up Luna’s slender form and lied on top of her. “I guess I could let you off with giving me just one orgasm. Then we can sleep.”

Luna narrowed her eyes at Celestia. “Tia, this is not your dream. Can this not be two sided? Being on top does not put you in control.”

Celestia raised an eyebrow. “What do you mean?”

“Listen to yourself, Tia. You sound as if you are speaking to a possession. Calm yourself.” Luna replied. “How about we switch places again? A moment ago you were begging for your own release, were you not?”

The sun princess blushed. “Oh… Of… Of course.” She backed off of Luna and let her sit up. She was caught off guard when Luna kissed her, while her lips were still covered in mare juices.

“Thank you, by the way. I know I do not have to, but…” Luna trailed off.

“It’s I who should be thanking you. You did come onto me, after all.” Celestia giggled. “I would have stayed away forever.”

“No you would not have. I know you and I know how you act when it comes to things like this, that and cake.”

“Oh…” Celestia looked away.

Luna sighed and shook her head, before pushing her elder sister down in the spot she had previously been. She then lied down on top of her. “Just relax, sister. This is supposed to be fun.”

Celestia blushed. “S-sorry…”

Luna leaned in and caught Celestia’s lips in a gentle kiss. Nothing lewd or French, just a gentle kiss one would receive from a first kiss. It was sweet and passionate and it made Celestia’s heart flutter.

After a moment, Luna pulled away with a light blush of her own. “Tia, there is nothing to be sorry for. I said relax and I meant it.” The princess slowly trailed her index finger down Celestia’s stomach, before slightly rubbing the tender, wet spot between her legs.

Celestia bit her bottom lip and let out a soft whimper, the tease making her even more wet.

“Does that feel good, sister?” Luna whispered heatedly to her sister. She slipped her middle finger into Celestia’s wet slit and worked the digit in small circles. “I bet it does.”

“L-Lu, ahhh… P-please stop teasing me… I-I… I want to cum…” Celestia pleaded through her light panting. She could feel the heat in her body rise from Luna’s movements, the pleasurable teasing was only exciting her even more.

Luna giggled and gave Celestia her most lusty bedroom eyes. “Well, I do believe I asked you this question before, Tia. What does my big sister wish of me to do to her?” She slipped a second finger into Celestia’s soaking snatch to add emphasis to the question.

Celestia moaned as she felt another digit penetrate her. It took every ounce of her willpower not to beg for her release. “I… I want you to eat me out… relentlessly… I want your tongue… inside me so badly it hurts...”

“Your wish is my pleasure, dear sexy sister of the day.” Luna pulled her fingers out of Celestia’s soaking wet sex and slipped them into her mouth. She made sure the sun princess was watching as she sucked the sweet arousal from her own fingers.

Celestia’s mouth went dry as she watched the dirty display. Oh, how it toyed with the princess that Luna could so easily excite her. Her breathing began to quicken as she watched Luna grow slowly closer to her ultimate prize.

Luna gently pushed Celestia’s thighs appart, fully exposing her wet lips to the night princess. She licked her lips at the delecacy. “I have heard rumors about how you taste like vanilla, dear sister… I had no idea they were true.” Without so much as a warning, Luna dove in for the kill.

The sun princess squealed in bliss, much like Luna had, and for good reason. The moment Luna’s tongue made contact with her tender lips, the wonderfully warm and textured muscle slipped inside of her. She could feel Luna grinding it against her tight walls. She could feel her searching for every weak spot. Oh, by the sun it was amazing.

Luna pressed her mouth against the tight lips and slipped her tongue inside as far as it would go, before working it in circles. The superior trained muscle and Luna’s constant exposure to dreams and fantasies of ponies gave her, by far, the greatest sexual advantage over her sister.

Celestia’s hands flew to the back of Luna’s head and she pulled the younger mare firmly against her snatch. Her fingers were entangled with the night sky-like ethereal mane as she was skillfully eaten out. It had been nowhere near as long for her as it had been for Luna, but she was still pent up beyond belief.

“Fuck, yes! M-make me cum, Lulu! Ahhhh!” She helplessly screamed in pure, white bliss as pleasure stormed Celestia with a downpour of euphoria. There was no way she was going to last long at all and she knew it. She didn’t even want to hold back.

Luna slipped her tongue out of Celestia’s slit and began licking sloppily at the tender clit. Oh, how Celestia’s screams of pleasure excited her; drove her on. She suddenly latched onto the pink pearl and sucked hard on it.

This caused Celestia to lock up. Her screams filled the room with the sounds of a pleasured princess as she was pushed over the edge, sending her into one of the strongest orgasms she had ever had. Her thighs clamped down on Luna’s head as a torrent of Celestia’s love juices squirted into the night princess’ mouth, spilling past her lips.

The night princess gladly swallowed down every bit of mare cum that she could. What she couldn’t spilled onto the bed.

It was a long moment before Celestia’s orgasmic spasms finally stopped and her thighs released Luna from their death grip. The sun princess herself could, as of right now, only stare blankly up at the ceiling, her breathing came in winded panting. She felt somepony press their body against her side and wrap their arms around her.

“How was it, sister?”

Celestia looked to her left to find the pony had been Luna. It took a few moments for her blitzed senseless mind to catch back up with her and a deep blush warmed her cheeks once it had. “I… I loved it, but… We really did that… Lulu, we had sex. I just… I mean… I don’t know if I’m supposed to be upset about it or completely overjoyed.”

Luna placed a finger against Celestia’s lips. “Shhh… Do not speak of that now. Let us sleep and we shall deal with it when we wake.”

Celestia sighed, but nodded in agreement. She too wrapped her arms around her younger sister and pulled the blanket over them both. Then she extinguished the magic candle lights with a quick counterspell.

That night, was the best sleep Celestia ever had.

END

Author's Note

Now before you say anything about it, yes I know neither Celestia or Luna lasted very long in the clop, but I did the best I could. I had just recently gotten over writer's block and decided to use my flash of inspiration on this chapter. I honestly liked the way it came out, but you ponies might have a different view.

If you have a better way of wording any of what I've written, please PM me. Don't leave it in the comments.