Heat

Luna wished that this had been a night just like any other. If nothing else, she would have had a long sleep, dreaming of things that she couldn't do while she was awake; maybe visit a beautiful beach or perhaps chase her own shadow on the surface of the moon. But alas, those were just the humble wishes of the Princess of the Night.

She had already forgotten how many days straight she had been fighting a losing battle with her bed, and a few minutes of sleep would have been a blessing. She had not much choice but to consume a mysterious, vile-tasting black liquid the ponies called "coffee" to keep herself awake.

But unfortunately, even that did nothing much to improve her overall condition, and neither did cold showers when she woke up.

Luna took another sip of the bitter liquid and put the mug back on the counter. "Children," she muttered to herself. "Princess Luna, do this. Princess Luna, do that. One day, just one day, I would like to go without complaints or wishes. Just one. Maybe I should…"

Her horn flared up, and magic licked her body, and with it, the dark stature of Nightmare Moon appeared. She grinned mischievously as she looked at herself in the nearby mirror. "Too bad that it's not Nightmare Night. I would have really enjoyed this. But alas…" With another flick of her horn, Luna reverted herself and turned back to her mug. Within her contemplation, she felt that something was off.

As the night was coming to its end, it was quite common for Celestia to be already up and rummaging around the kitchen, trying to prepare breakfast and coffee for herself, since she didn't like to wake servants just for that. Instead of those familiar noises, all was silent. Only a distant cough, undoubtedly from one of the guards, disturbed the night.

Luna sighed. I don't have the energy to raise the sun, so I better wake Tia, she thought to herself. And hopefully get some sleep afterwards. She sighed. "However unlikely that might seem…"

With one last swig, she drained the rest of her coffee and cringed. It was just as terrible and bitter as it had been a minute ago, ten minutes ago, yesterday, and the days before that. And yet, it was oddly satisfying.

Heading toward Celestia’s chambers, Luna's ears perked up when she arrived and could hear muffled moans permeating through the thick door.

Confused and curious, Luna timidly pushed the door open. She was not sure what to expect, but according to the sounds she had just heard, her sister was playing with herself. If she made her presence known, Celestia would most likely try to cover the act in embarrassing haste, as she had a couple of times before.

The idea of seeing her sister embarrassed in such a way made Luna smirk as she pushed the door even further. The very moment she sees Celestia with a hoof between her hind legs, she would call out her sister’s name in the Royal Canterlot Voice.

But when Celestia came into view, it wasn't like Luna had imagined it: Celestia's hips were in the air, legs spread wide enough so that Luna got an unobstructed view of her slightly spread lips and the erect clit poking out like a faintly glowing, glistening marble. From afar, it looked like a small sun.

Instead of yelling her sister's name in the Royal Canterlot Voice, Luna stood there silently and curiously watched the show. She couldn't place it, but there was something mesmerizing about the act itself. Whether she was amused by her sister moaning in ecstasy or that she enjoyed watching the parts that were usually hidden from the public, Luna couldn't tell.

A familiar warmth had started to build in herself, something that she had only felt for a couple of ponies that, unfortunately, usually ended up leaving her disappointed. She silently sighed.

During Luna's self-reflection, Celestia came hard, and her scream, which was inappropriate for a princess, was muffled by one of her pillows.

Startled by the scream, Luna briefly looked at her sister's flanks, shook her head, and spun around to face the door. She flicked her horn to open them, and—

"Luna!" Celestia yelped and hastily covered herself with a nearby blanket. "What the hay!"

"I-I didn't mean to! I just wanted to wake you up! You were nowhere to be seen so I…" Luna almost shouted back as her face flared up. "I… just froze… If you had seen me leaving, you would have yelled at me, but since I stayed… I guess nothing; the result was the same…"

Celestia raised her hoof. "I'm sorry that you saw me masturbating, Luna, but I couldn't help myself." She took a deep breath to calm herself down a little bit. "Heat doesn't spare even the oldest of royalty. I know that I need to raise the sun, but it really got the best of me. I needed to—"

“Tia!”

Despite having quite a few lovers in her time, Luna still shied away from any talk about sex. Celestia knew that fully well, and the sight of Luna’s face, now glowing in the shade of a ripe tomato, was amusing her to no end. She decided that it was time for a little revenge for Luna’s intrusion.

"You really should try it sometime, Luna. There's nothing wrong with it… Especially if you're in need of releasing some tension…"

"I'm not tense!" Luna yelled. "And besides, it's not dignified for a princess to—"

"Watch her sister doing it?" Celestia replied with a smirk.

Luna's face grew even redder still. "I didn't—"

"I kid, Luna, I kid. What kind of a sister would I be if I didn't tease you?" Celestia asked playfully as she approached Luna and kissed her on her forehead. "Now that I'm done, I really should attend to my duties. And speaking of which, I'm actually surprised that Twilight isn't already here, knocking on my door and asking why the sun isn't up yet." She smirked. "Maybe she's enjoying some quality time of her own."

Deciding that she teased Luna more than enough for the day, Celestia left the room, leaving Luna alone.

"I'm not tense," Luna whispered to herself for reassurance. She groaned and looked at the messy bed that seemed as if Discord had been unleashed upon the poor piece of furniture.

And yet, it was still carrying a little bit of Celestia's scent. It was mixed with the gentle fragrance of Celestia's bathing salts, but even those were unable to hide it completely.

"Luna?"

Luna flinched. "I'm not tense!" she yelled.

Celestia blinked. "What?"

"N-nothing. I'm just tired, I guess. I'm having trouble with my sleep."

"Still?"

Luna nodded. "I get nervous and can't seem to calm down enough to fall asleep. It happens eventually, but…"

Celestia smiled softly. "Maybe you should cut down on the coffee?"

"Tia, this isn't funny!"

"My apologies, Luna, but if you're in heat as well, I think that your… trouble could be solved easily…" Celestia glanced at Luna's hoof.

Luna blinked and hid her hoof from her sister's eyes. "You mean… My own hoof… Down there…" She cringed. "Absolutely not!"

Celestia sighed. “Fine, if you refuse to do it yourself, then let me do it for you."

"You want to… My… But you're my sister and not my mare! And I—"

"Luna, this has nothing to do with romantic relationships. It's just me being a big sister, helping out. Nothing more." She smirked as Luna's muzzle started to turn into strange hues of red. "I'm surprised that after all of this time, you still don't—"

"Tia…"

"It's just a hoof. It doesn't bite or—"

"Tia!"

Celestia giggled. "I couldn't help myself. You know… I believe that the rumors are true, and you do look quite cute when you're embarrassed."

Even redder still, Luna turned around with a snort.

"I'm sorry, Luna. I went a little bit too far." Celestia sighed. "Look, I just want to help…"

"Thank you, Tia, but I don't need—"

"A helping hoof? Luna, some ponies have noticed that you’ve been… tense. You even yelled at the guard that was just doing his job."

Luna’s ears splayed back against her head. "So you heard…"

"It was hard not to. The poor guy almost burst into tears in front of me… Luna, if you need help, I'll be happy to offer it. If not… I hope that nopony else comes running to me because of it."

Luna groaned. Swallowing her pride, she asked in a low voice, "What… What do you want me to do?"

"Just climb onto the bed and relax," Celestia replied happily.

Luna nodded. She climbed onto her sister's bed and lay on her stomach, her tail up and legs spread, waiting for Celestia to do something.

She didn't need to wait for long before the tip of Celestia’s white hoof lightly pressed against her spine, between her wings, making them spread wide open as a surge shot throughout her entire body.

"Not tense, huh?"

"Mayhaps just a little…"

Celestia giggled, and after a brief pause, her hoof glided across the spread wing and continued down the spine until it reached Luna’s flanks. Afterwards, it curled up and traced the dock to its peak, all the way to the small crevice between the two flanks.

As the hoof passed that, Luna softly moaned and pushed her rear against her sister's hoof.

"You're enjoying this, aren't you?"

"Mmmm."

"Hold on." With a flick of her horn, Celestia opened one of her drawers and pulled out a plastic bottle aptly labeled "Passion Fruit Oil". She applied some of it onto her hoof, as well as a little bit onto Luna's mounds, and gently started rubbing it in.

With small, circular motions, she managed to sneak the tip of her hoof into the damp hole and push against Luna's clit. Luna moaned again and shifted her legs, opening her slit and revealing a glimpse of her glistening interior.

Celestia pushed a little harder and started to rub the small, pink bud that was now protruding from the fleshy hole. She felt Luna's body stiffen, and as she continued, Luna lifted up her rump to present Celestia her delicious fruit.

However, as amused as she was by the whole ordeal, Celestia paid little attention to the scene and increased the tempo.

As Luna's soft moans turned into heavy breathing, she clung onto one of the pillows and bit into another. Whether that was the same one that Celestia screamed into not long ago, she didn't know, or rather at this point, didn't care. The undivided attention that Celestia poured into Luna's climax took its toll as Luna's body stiffened and trembled when the ripples of orgasm shook her entire body.

However, even though Celestia felt Luna's climax, she had no intention to stop. Now that Luna's clit became even slicker, Celestia's hoof started to make even smaller and faster circles on it, adding more and more to the remaining pressure.

And a few seconds later, Luna's body stiffened up again, and she couldn't make herself say more than "T-Tia!" before her body convulsed as the second, more powerful climax washed over her. Her tired and exhausted body collapsed onto the warm bed, coated with the mixture of oil and her own scent. She looked back and smiled as she felt the contraction of her vulva gave a wet wink to Celestia.

"Luna?" Celestia asked softly.

"Mmmmhmmm."

"Feeling better?"

Luna faintly nodded. "Mhm. And tired, too. That was really… something…"

"That was the sole purpose of this, Luna." Celestia ruffled Luna’s dark-blue feathers like she did when they were foals. "Now, do me a favor and get some sleep?"

As Luna nodded again, Celestia lit her horn and closed the heavy curtains, shrouding the bright room into darkness.

Luna didn't need to be told twice. A severe lack of sleep and what Celestia did to her was draining, to put it lightly. Even without Celestia's request, or her closing the curtains, it wouldn't take more than a few additional minutes to fall asleep. At that point, she could hardly register anything anymore, except for when she felt a hoof remove the hair from her muzzle as somepony whispered her goodnight.

* * *

Luna slowly opened her eyes. She could see the faint rays of light still poking through the heavy curtains, allowing her to make out the room’s furniture that didn't belong to her. She took a lungful of scented air, the faint smell of her own musk and passion fruit oil bringing back the memories from this morning. She shivered in delight.

Because of Celestia, her nervousness and tension had dissipated from her, and on top of that, as brief as it was, Celestia's casual "helping out" had felt better than what she had experienced with most of her lovers. And for that reason, she would make sure to return the favor. With interest.

Sighing in contentment, Luna rolled off of the bed. She lit her horn to open the curtains, letting in some light of the fading day.

"Almost evening," she muttered to herself. "I wonder what made Tia let me sleep in for so long." Just as Luna finished the sentence, she mentally reprimanded herself and shook her head. "What indeed…" With that, she spun on her hoof and left towards the dining room.

"Good evening," Celestia chirped on Luna's arrival, taking a sip from a cup of the vile, black liquid. "Feeling better?"

"Much," Luna cheerfully replied. "I really needed that." Without a second thought, she headed to the kitchen counter and asked for a cup of coffee herself.

Celestia silently watched as Luna took a swig and stuck out her tongue.

"Blech. It's still terrible."

Celestia smirked. "If you don't like it, you just don't like it."

Luna watched her sister elicit a subtle sigh, her smile also fading as she took another sip. Worried, she asked, "Tia?"

"What is it, Luna?"

"Are you okay?"

"What do you mean? Why wouldn't I be?"

"You're usually much more cheerful at this time of day…" Luna giggled. "Even when you don't let me sleep in."

"It's nothing, Luna," Celestia replied with a smile. "It's just… It's been a really long day. To be honest, all that I want right now is a long hot bath and some sleep."

"That bad?"

"No, no. Of course not. I'm just exhausted. Nothing else."

"I know the perfect remedy for that," Luna happily replied. "A little massage, and you'll be as good as new."

Celestia blinked.

"It's the least that I can do to repay you."

"Repay me? Repay me for what? Oh, you mean—" Celestia reprimanded herself as Luna nodded shyly. "Luna, don't be silly. That was nothing. I was just being a big sister, helping out. Nothing else."

"I still want to, Tia. If nothing else, it will make me feel better, too. You know full well that I don't like to be in debt."

"Mhm, too well." Celestia looked at her sister. "You really don't have to, Luna."

In reply, Luna stuck out her tongue.

Celestia giggled. "Very well, if you insist. I guess that I should exchange that long bath for a short shower?"

With Luna's nod, Celestia headed to the bathroom. While her sister was absent, Luna grabbed herself some dinner, ogling her mug and its increasingly cold contents whilst eating. All too soon, her coffee was nearly finished, and against her better judgment, she opened her mouth and shoved her tongue into the mug.

As she tried to reach the remnants of the black liquid, a familiar voice behind her cleared her throat. "This is something that you don't see everyday: a princess trying to eat her mug. Although, I think that your approach might be a little… unconventional."

Luna looked up. While she was playing with her coffee, she hasn't realized that Celestia had finished with her shower and entered the dining room. She could see Celestia's fur was still slightly damp and her ethereal mane sloppily braided. Her regalia was also absent, indicating that she was ready to call it for the day.

"What?" Celestia asked. "I did the best that I could in a few minutes. And of course, my mane didn't wanted to cooperate as usual, so I had to do something."

"'T wooks ood," Luna mumbled into the mug. Quickly, she removed her muzzle, and repeated herself. "It looks good."

Celestia smiled. "If my old memory serves me correctly, you offered a massage? Or are you going to finish eating the mug first?"

Luna snickered and nodded. "I think that it would be a little better if we go into my bedroom rather than yours this time."

"How so?"

"I asked to replace sheets, so…"

Celestia smirked. "Very well, your room it is then… Lu?"

"Yes?"

"You… have done this before?"

Luna nodded. "With… favorable results," she answered, and with it, her muzzle slightly reddened.

"Then I'll take your word for it." Celestia lit her horn and transported both of them to Luna's room. She cleared her throat. "Well," she continued in a little more cheerful voice. "How do you want me?"

"W-what?"

"What do you mean 'what'? I meant how do you want me on the bed? On the back or on the stomach?"

"L-stomach." Luna cleared her throat. "Lie on your stomach."

"Luna?"

Luna shook her head. "I just… you asked in the same tone as—And for a moment, I thought—" She sighed. "For a moment, you sounded like my former…"

"I did? Hm. I'm not exactly sure what to think of that, but I guess that I'll have to be more careful the next time around…" Celestia lay on the bed as instructed and clung the nearby pillow. "Ready when you are, Princess Luna."

Luna giggled. She opened her drawer and pulled out a bottle of peach-scented massage oil.

"Do I want to know how old this is?"

"This?" Luna lifted the bottle, and with it, Celestia nodded in acknowledgment. "Oh, only a few weeks. I often rub it into my—"

"Lower parts?"

"Tia…"

Celestia smirked. "Sorry, I couldn't help myself. You are just too easily flustered."

"My hooves," Luna finished, her muzzle slightly red. She put a dab of it onto her hoof and held it out to her sister. "I really like the smell of it. See?"

"Mhm," Celestia muttered as Luna moved to put slight pressure at the back of her neck.

Luna's oily hooves slid down the length of Celestia’s spine and back again, making sure to massage every inch of her sister's sore muscles. As she finished with Celestia's back, she carefully pressed into the snow-white wings, opening them slightly. After a period of receiving no further response from Celestia, Luna released the wing.

"Tia? Are you still awake?"

"Mhm," Celestia whispered back in a groggy voice. "Barely."

Luna giggled. "I'm done with your back. Do you want to turn around for me to do the same for the front?"

Celestia smiled and slowly turned around. "If I fall asleep, I'm blaming you."

"Of course," Luna replied with a smirk. She dipped her hooves into the aromatic oil again and pushed against Celestia's chest. Just like with the back, Luna made sure that she would take good care of her sister's front side.

From the neck and to Celestia's wings, and even further down to her flanks, Luna happily rubbed the aromatic oil into her sister's fur and skin. However, as soon as her hoof passed the snow-white stomach, Celestia softly moaned and opened her hind legs, enough for Luna to catch a glimpse of her sister's private parts, and with it, a small, pink organ protruding through the wrinkled lips.

Luna’s hooves slowed down as the unmistakable scent of Celestia's arousal teased her nostrils. It was the same musky scent that Luna smelled in her sister's room earlier that day: a warm, inviting scent of a mare's arousal.
Luna bit her lower lip, but as she continued with the massage, she found it harder and harder to battle her temptation. She kept telling herself that this is her sister and not one of her lovers, but the memories from the morning reminded her how much she enjoyed their ordeal.

She swallowed hard as her hoof slipped between the white flanks and pressed against her sister's inner thighs. Without saying anything, Celestia opened her hind legs even further, her pink petals on clear display to Luna.

Luna took a moment to compose herself and let her oily hooves continue down, making her sister elicit a stifled moan. She realized what Celestia wanted at that moment, and she was too excited herself to let it pass.

Besides, Celestia made sure Luna was properly satisfied, too, and what better way to repay her sister than a little release of her own.

With a little plan forming in her head, Luna dabbed her hooves with more of her oil. Rhythmically rubbing it into the slit, she spread Celestia's lips, exposing the deep-red and slippery interior of the delicious fruit. With a mischievous smile, Luna leaned forward and extended her tongue. As it passed across the damp slit, Celestia shivered.

Celestia opened her eyes and looked down. "L-Luna?"

"I owe you, remember?"

"You don—" Celestia gasped and bit her lower lip as Luna's tongue dove deeper into the forbidden fruit. "D-don't. Don't s-stop, Lu," she whispered. Her body had gone for far too long without a worthy climax, and she craved the touch of somepony else, and at that very moment, it did not even matter if it came from her own sister. "Ohhhh…"

With each passing moment, Luna shed away her timid nature as her actions became bolder and braver. As Celestia wrapped her hind legs around her, Luna dove even deeper. She engulfed her sister's labia and continued her explorations of the delicious organ. She happily flicked around Celestia's clit, and with each flick, the small, pink organ seemed to become stiffer and firmer. And with it, Celestia's breathing became deeper, and soft moans shortly started to accompany it.

With a mischievous grin, Luna leaned forward, her lips clamping around the fleshy button, and started kneading it between her lips. She suckled on the clit for a moment before releasing it and repeated the gesture.

Celestia's legs gripped tighter as Luna dipped her muscle back inside of her and started to lap away at the delicious juices that formed inside of Celestia. As Luna continued, Celestia could sense the pressure of pleasure reaching its boiling point.

Without warning, Celestia bucked up with a silent scream, and as her body convulsed, a small, thick stream of her juices shot onto Luna's surprised muzzle. However, Luna quickly placed her mouth over the warm hole, as yet another, but weaker, stream ended in her mouth. With a smile, Luna gulped down that as well and gently started to lap the remaining juices out of her sister.

When Celestia's body cooled down, and the post-orgasmic convulsions subsided, Luna moved away from her sister's groin and looked up with a smile.

"Goodness, Luna," Celestia breathed. "W-what the hay happened?"

Luna didn't answer. Instead, she gave a peck on her sister's clit.

Celestia shook her head. "It's unlike anything I've experienced so far… And that squirt… that never happened to me before."

Luna smirked. "Mayhaps you should go out with a mare sometime…"

Celestia stuck out her tongue. "Now, you're just being silly, Lu. You know full well that mares don't interest me."

"I've been absent for a thousand years, Tia. You could’ve change your mind in that time. Besides, you just spent some time with a mare, and I didn't hear you complaining much."

"Luna…"

"What?" Luna asked innocently, but her act received nothing more than an unimpressed glare. "But to be fair, Tia, I never shared my bed with anypony who uh…" Her muzzle flared up. "I-I guess that it was something of a first for the both of us."

Celestia nodded.

Luna rubbed her nose, still coated with her sister's juices. "I guess that I should get myself cleaned up."

"Luna?"

"Hm?"

"How was… it?"

"How was… Oh… A little warm."

Celestia sighed.

"I don't know what else to say, Tia. It uh… tastes more or less the same as the rest of it… Well, almost."

Celestia cringed.

"I like it myself."

"So I noticed. I tried it a couple of times myself, and… yuck."

Luna shrugged. "I guess that it's not for everypony… Speaking of which, I really should take that shower."

Celestia nodded, and with a flash of dark-blue light, she was left alone, still lying on her sister's bed. Curious, she dragged her hoof across her wet slit, brought it back to her muzzle, and cautiously licked it, a decision that she regretted almost immediately.

She sighed, lit her horn, and teleported from Luna's bedroom, leaving nothing but a little puddle of her juices on her sister's sheets.

* * *

With a tap of her hoof, Luna started the shower and let the warm water wash away the traces of their act.

Now that the heat of the moment had calmed down and left her alone with her thoughts, Luna reminisced on what happened between her and Celestia. She still couldn't believe that she let herself give into the scent of her own sister. It was harder to believe that Celestia even encouraged her to continue with her act. For some bizarre reason, she hadn't been distraught by the entire ordeal as much as she should be. It felt like that it was just a tryst with any other mare.

Lost in her thoughts and the arousal accompanying it, Luna instinctively turned around and lifted her tail, allowing the warm stream to massage her intimate parts. But it didn't end there. She lit her horn, using her magic to slightly spread her lips, allowing the droplets to massage her interiors as well. Amidst her enjoyment, she completely missed Celestia entering the bathroom.

"Using your hoof isn't dignified, but this is?" Celestia asked in her casual voice.

Luna jumped in shock and surprise, slipping on the wet tub and leaving her flank facing Celestia. "T-Tia! What the hay are you doing here?!"

Celestia giggled while Luna tried to untangle herself. "The door was unlocked. I thought that you were already done?"

"I wasn't!"

"I can see that now, Luna. And since I'm already here, I also wanted to talk to you before I head to bed."

"Can it not wait until I'm at least done with my shower?"

Celestia took a deep breath. "It could. But since I'm already here… Ummm, Luna?" she asked, her muzzle flaring slightly red. "I just wanted to say that I enjoyed your massage, and… I… Luna?"

"Hm?"

"Do you think that we could do that… again, sometime?"