Heat

Celestia had expected to be relaxed in the spa, but this was even beyond her expectations. She could barely keep her eyes open from the moment the royal sisters plopped themselves on the wooden bench in the hot and humid steam room. That, and the mixture of Luna's scent, sweat, and that she was gazing at the barely obstructed mare bits under Luna's towel for the past few minutes also took a toll on Celestia.

"Tia? You're awfully quiet," Luna murmured. It was enough to make Celestia shift her gaze away from Luna's towel.

"Hm? Y-yes. I'm on the verge of falling asleep…"

"You too? I guess that this place tends to do that…" Luna shifted a little bit, enough for her towel to slip higher, uncovering even more of her flank to Celestia.

Celestia smiled, raised her foreleg, and prodded her sister on her back, just where the wings met. It caused Luna's free wing to shoot up, making Celestia giggle like a filly.

"H-hey!"

"What?" Celestia asked innocently.

"Stop that," Luna said unconvincingly and folded back her wing.

Celestia waited for a moment before repeating herself. Much to her amusement, Luna attempted to shove away the offending white hoof, but Celestia kept poking.

Luna groaned. "Tia…"

"Is there something the matter, dear sister?"

"Tia," Luna repeated herself.

"What?" Celestia asked innocently. "I'm not doing anything…"

"Liar," Luna said flatly, which caused Celestia to burst into laughter.

"I had to," Celestia said as she tried to stifle her laughter. "I hadn't done that since you came back… Hm. I have an idea. Lie on your stomach," she said, looking at Luna.

"What are you planning?"

"You'll see. Now lie down…"

Luna nodded, turned around, and seconds later, she felt a hoof caressing her wing.

"I haven't done this for so long," Celestia said softly as the tip of her hooves pressed against the small space between Luna's wings.

"Mmm," Luna murmured. "A little lower…"

Celestia obliged, moving her hoof a little lower and then back between Luna's wings and down again.

Luna closed her eyes. "That's the spot," she muttered.

Celestia continued with her massage, her hoof kneading the area around Luna's wings and spine. She paused shortly when Luna said nothing, but continued with a smile when she heard Luna emitting a soft snore.

After a few minutes of massaging, Luna's snores stopped as she groaned.

"I see that you're still alive," Celestia mused. "You went silent all of the sudden. And snored shortly after. Now that I think of—"

"Tia…"

"What? Teasing little sisters is obligatory… Now that I think of it, I should make it a law, or something along that direction. What do you think?"

"Tia…"

"I'm kidding, Luna, I'm kidding! Sheesh. Sometimes you're so grumpy when you had just woken up…"

Luna blinked. "I'm… what?"

"I said you're… um… not even listening?"

"I am, and I'm grumpy," Luna groaned. "But there's something else on my mind…"

"Something important, I assume, since this is our time to kick back a little bit. Twilight and her friends will take care of the castle duties while we're gone. Is that what's troubling you? You're not confident that she'll keep the castle in one piece for these few hours?"

"W-what? No, Tia, don't be silly. Even though trouble seems to find her now and again… But that's not it… It's just… I'm worried…"

Celestia blinked. "Worried? About what?"

"About what you're going to say…"

"What do you mean?"

"You know well what I mean… Every time you start teasing me, there's something heavy on your mind…"

"Don't be silly, Lu. I—"

"When I returned, you started to tease me, just because you weren't certain Nightmare Moon had been banished proper," Luna said flatly. "Or at the royal wedding, when you shunned Twilight, you wanted affirmation that what you did was right. And before I became Nightmare Moon, you'd—"

"I get it, I get it." Celestia sighed. "You're right. I want to talk to you, but I can never figure out how to say it…"

Luna giggled. "Of the two of us, you were never the pony that had nothing to say… So, um… Just say it?"

"Okay, um… I… " Celestia took a deep breath to muster up her courage. "I love… you," she finally blurted.

"I love you too, Tia. We're sisters after all, and it would be odd if we didn't—"

"N… not as a sister," Celestia replied in a low voice, her face now deeply red.

Luna blinked. "W-what? I don't… me? How? Why?"

Celestia sat down. "I don't know… Even before what happened at the Grand Galloping Gala, I enjoyed helping you out with your heat more than I should…"

"And then the Grand Galloping Gala happened."

"And then the Grand Galloping Gala happened,” Celestia said with a nod. “And then there was rum… and you. It's the first time I slept with a mare. And I enjoyed every moment of it. At least now, I know how it feels. And then I had this dream…"

"The dream that you mentioned before?"

Celestia nodded. "It was about you and me, and you… You came into my room and started kissing me… It seemed like… It seemed like we'd been together for a long time. You became worried when I denied you a good morning kiss."

Luna smirked.

"What's so funny?"

"You, silly. You should know better than most ponies that dreams often don't mean much. At most, I can garner that you are growing an appreciation for mares. Having dreams like that is far more common than you'd expect. I'm kind of amused that you hadn't realized that in my absence…"

Celestia bit her lip. "I know, Luna," she said, a hint of uncertainty in her voice. "But that's not it. As much as this sounds like a cliche, it really felt much more than a simple dream… I gave in. It was… arousing, and then I woke up while trying to make out with a pillow. It really didn't work that well, but as soon as I thought about sharing a kiss with you… it was enough to—"

"Tia," Luna said in a soft, understanding tone. "There are plenty of ponies out there… I don't think that you'll have trouble charming anypony, whether being mare or not."

"But that isn't it either…"

"Hm? Then what is?"

"I'm… I'm not really interested in other mares… These past few weeks, I was trying to see if any other mare would catch my interest. It turned out that it was just as exciting as staring into a brick wall. But whenever you are near me…" Celestia sighed. "I'm sorry, Luna. None of this came out like I had wanted… Just… Can you forget that I said anything? I don't want to make things between us too awkward…"

Luna silently stood up and nervously sat a few feet from her sister. She took a long moment before she exhaled and started, "You know, when we were fillies, I had a crush on you for the longest time as well."

"What?" Celesta blurted out, visually shocked. "You never told me about that…"

"Of course I didn't," Luna replied sternly. "I can't imagine how strange it would be to say anything like that. And yet, I still tried to get you to notice regardless. Back then, you paid little heed to my… attempts, so I had no choice but to give up… Eventually.

"It still took me quite some time to realize that I'm not interested in stallions even the slightest." She snickered. "I guess that I'm not the brightest pony as far as that is concerned after all."

"Me," Celestia blurted. "I don't understand… why me? There were plenty of ponies in the classroom, as well as everywhere else…"

"You are a princess, and in the stories, ponies always get their princesses."

Celestia blinked. "What?"

"Kidding, Tia. We were foals. Foals do stupid things sometimes… Back then, I thought that everypony had a crush on their siblings. Apparently, that wasn't really the case…"

"You don't say," Celestia mused.

"Shush," Luna replied in a fake stern voice. "Though, I thought those feelings were long forgotten… But… I guess that they were just hiding… Tia, when I asked for your help for the first time… The thought of somepony else doing what you did never even crossed my mind."

Now it was Celestia's turn to fall silent.

"And then I had to ask again… And at the Gala…"

"We both had a bit too much to drink back then, Lu."

Luna shook her head. "No."

"No?"

"No. It was… You wanted it. Or rather needed it because of what happened. And then things just spiraled out of control. I guess that I needed it too…"

"But afterwards you just… left, Luna. I was worried that I did something irreparable to our relationship."

Luna shook her head. "I just… I just needed some time for myself…"

"Luna?"

"Hm?"

"What happens now?"

Luna hesitantly stood up.

Celestia's heart started racing as she glanced at the body of her sister. Her gaze moved up the dark-blue legs, to the sweaty chest, and when it moved even higher, she couldn't help herself but elicit a small smile when their eyes met. A distinct warmth soared through her body, making her muzzle tint slightly red, and the rest of her body reacted with it.

She closed her eyes and hung her head. As much as she wanted to give in to the warm feelings that were awoken by Luna's presence, Celestia expected Luna to either kiss her, or just shrug everything off and pretend like the conversation had never happened.

And yet, Luna leaned down and cautiously pressed her muzzle against Celestia's. As their lips touched, the mild taste of the fruity lip balm caught Luna by a surprise.

Celestia opened her eyes. "Luna?"

"I was curious… Without alcohol…"

"You were…" Celestia asked curiously. "And how was it?"

"Strawberry flavored."

Celestia smirked, her eyes looking into her sister's turquoise counterparts. With Luna gazing back, an awkward moment of silence fell between them. However, they didn’t stay silent for long, as Celestia slowly leaned forward and pressed her muzzle to her sister's again.

Instead of backing off, Luna closed her eyes and indulged her sister in the kiss. The faint strawberry flavor only added to her enjoyment of the situation. She could feel her heart struggling to stay in her chest. It was nothing like she had experienced before. With her lips still firmly joined to her sister's, she felt a hoof pressed against her chest. Only then did she realize that her heart wasn't the only one racing.

"Tia," she breathed. "What are we even doing?"

Celestia didn't reply. Instead, she playfully bit Luna's lower lip.

That was enough for Luna to quench the voice inside of her, reminding her that she had just made out with her sister. And she didn't want to stop there, either. Her hooves braced Celestia's hip, and with a gentle push, Celestia folded herself under Luna.

With a small smile on her muzzle, Celestia moved her hooves down to Luna's cutie mark and back to her wings as their kiss grew deeper. Luna's tongue slipped inside of her sister's warm mouth, and was welcomed by Celestia's slippery muscle. Celestia shivered and moaned slightly as Luna's leg accidentally brushed against her sister's nethers.

Luna gently broke the kiss and tilted her head like a confused puppy. "I just touched you, Tia. Are you that excited?"

Celestia nodded subtly. "How could I not be with the prettiest princess just inches away from me?"

"I'm not—"

"Oh, shush. Neither Twilight nor Cady have anything on you."

Luna's cheeks flared red. "You're flattering me, Tia."

"I hope so, Lu."

Luna smirked and leaned forward, gently biting Celestia's lower lip, and let it turn into a passionate kiss, her tongue chasing her sister's again. Luna felt her heart race again, the scent of her sister's musk permeating her nostrils and making her feverish.

Luna broke away from Celestia’s muzzle and planted a kiss on her neck. Moving down the gorgeous snow-white body, Luna planted another kiss on the base of a foreleg, one on her hoof, and then on the joint just a few inches lower.

Celestia watched as her sister's head went even lower, nuzzling her body as she saw fit. She was no stranger to sex — hay, she did it more than she could even count, but this was something different. She could easily come by watching Luna's muzzle approaching her nethers and nudging her inner thighs.

However, Luna had no plans to make it so easy for Celestia.

As she approached the lower part of the white stomach, Luna changed her direction, and instead of reaching for her sister's pink clit that was now protruding through the alarmingly slick crevice, she placed one of her kisses on the snow-white thigh and, with the tip of her tongue, traced to the end of the leg, kissed her hoof, and then started to trace it up again.

"L-Lu. S-stop teasing and fuck me already!"

Luna didn't reply. Instead of indulging her sister's wishes, she placed another kiss on the exposed white stomach and nipped one of the erect teats. She smirked as Celestia flinched, but continued with twirling her tongue around the nipple, and when Celestia moaned again, Luna fully engulfed the teat.

"L-Luna," Celestia feverishly breathed as the warmth she felt before turned into a wildfire. She could barely watch as her sister played with her teats, first with one, then the other, and then proceeded to attend them interchangeably.

The world dissolved quickly around Celestia where she could only see a dark-blue head rhythmically bob up and down as she suckled on her teat, along with the occasional glimpse of turquoise eyes whenever Luna looked up. As hard as she tried not to come right there and then, Celestia moaned again, and she felt her body giving up under the unexpectedly arousing stimuli. Her muscles contracted, and a moment later, her body exploded, releasing all of the pressure accumulated not just during the day, but also since the gala, or rather, their last sexual encounter. With an orgasm soaring throughout her body, she bucked up, and a thin stream of clear liquid shot out of her vagina and hit one of her sister’s hind legs, catching Luna off guard.

"Egads!" Luna whined and stepped back, even though she didn't need to. The second spurt didn't reach as close as the first one, but the clear liquid still landed impressively far. Luna giggled as the third and fourth shots more or less only trickled out of her sister.

Celestia laid on her back panting, her petals wet and opened wide for her sister to admire at her leisure.

"That was fast…" Luna asked curiously. "I haven't even gotten to your… em…"

"Clitoris, Luna. It doesn't make you any less of a princess if you say it out loud, Lu."

Luna nodded, blushing faintly. It was not nearly as intense as the time she caught her sister in her bed playing with herself. "You… really didn't last for long this time either."

Still panting, Celestia shook her head. "I hardly ever finished when I was with a stallion, Lu, and now look what's happening. And it's all because of you."

"I'm just a mare, Tia. If you'd—" Luna couldn't finish her sentence as her ears perked up, and she looked towards one of the walls.

"Luna?" Celestia asked, curious about what was happening.

"Ssh," Luna said in a stern voice. "I think I heard something…"

"Something?"

"It sounded like a scream! Somepony may be in trouble!"

"Scream? But—" Before Celestia finished that sentence, Luna had already disappeared in a cloud of light-blue magic, leaving her sister to catch her breath. It only took a few more seconds before Celestia came around, and she disappeared in a cloud of her own magic, following Luna down the hallway.

Celestia kept quiet, making sure that she made no noise while she went looking for her sister. It didn't take long before she spotted a familiar tail, sticking out of the corner that led to one of the massaging rooms. Since the tail, aside of it flowing in the ethereal wind, wasn't moving, she was concerned. With another flick of her horn, she teleported to the other side of the corner in an attempt to see what's happening.

She saw that Luna wasn't stressed or show any signs of peril; quite the opposite was true — she seemed calm, yet very focused on what was happening through the slightly opened door. Celestia took a few more steps forward to join her sister to find out what the fuss is about.

Instead of announcing herself, even as quiet as she possibly could, she gently nudged her sister's ear, something that she did back when they were foals.

However, Luna didn't jump due to the gesture; it was as if she had expected it to happen. Instead, she calmly looked at Celestia.

"So? Where's the fire?" Celestia asked almost inaudibly.

Luna didn't answer. Instead she stepped aside and let Celestia look through the slightly opened door. Inside, on one of the massaging tables, Aloe, one of the spa owners, was lying on it, biting her hoof in an attempt to not make a noise, whilst her sister was attending her nethers, one lick at a time. It wouldn't take many guesses about what were they doing, especially since Lotus briefly pulled her head from between her sister's hind legs, leaned forward, and deeply kissed her.

Celestia looked at the blushing Luna. "That explains the scream," she whispered. "But we should leave here before they notice us. Should we hit the shower? I think that we both desperately need it…"

Luna nodded. She silently spun around, but she caught a glimpse of the twins still engaging in each other, with Aloe now on the bottom with Lotus’s hoof rubbing against her marehood. While walking away, the princesses heard a sharp gasp from the room, which was quickly quenched by her sister's mouth.

Still walking silently, the royal pair finally arrived at the showers. Luna sighed.

"At work!" she finally blurted.

Celestia smirked. "Maybe they had nothing else to do? Given that we're the only other ponies here…"

"Still… And on top of it—"

"They are sisters?"

"Twins!" The moment the words left Luna's mouth, she covered it with her hoof as she realized what she had just said.

"I'm sorry," she muttered through the hoof. "After what happened between us… I shouldn't be saying that."

Celestia nodded. "These things just—"

"Happen, I know. Still… seeing sisters doing it in front of my nose rouses a strange sensation…"

"You enjoyed it?" Celestia asked curiously.

Luna opened her mouth and shut it quickly. She was lost for words, but her muzzle, glowing red, spoke volumes. Celestia couldn't help herself but giggle.

"What? I like mares!" Luna muttered. "I had a fair share of seeing mares doing it in magazines."

Even though her question wasn't answered directly, Celestia elicited a small smile, took a few steps back, and opened the faucet with a flick of her magic. She closed her eyes, and an onslaught of warm droplets rapidly spread across her body, leaving no part of her back dry. She grunted happily as the warm water washed away the sweat from her body.

Luna felt something was wrong. Celestia hardly ever backed off from a conversation, unless the subject at hoof was touchy or—

You enjoyed it? Her sister's question echoed in Luna's head. A simple, straightforward question that she avoided answering, and she wasn't certain why. Yes or no. A plain, single-worded reply that she wasn't entirely certain which one to pick. I like mares, she repeated to herself, an answer even more obvious and generic than replying with 'water is wet'.

Did she enjoy watching the spa twins eating each other out? Since she only had eyes for mares, the answer was an obvious "yes", but as simple as that answer would be, it didn't sit right with her.

"No," she finally said it out loud.

"Hm? No? What 'no'?" Celestia asked in an almost dreamy voice.

"I meant 'no, I didn't enjoy it'."

"Because they are sisters?"

Luna shook her head. "I thought of that, but…"

"But?"

"I didn't enjoy it because…" Luna fell silent as she stared deeply into the warm pink eyes of her sister.

"Because?"

"Because… I… I think I kind of envied them…"

"Envy?"

Luna nodded. "Even with the little we had seen, I felt something between them… They have each other, and I…" Her voice trailed off, and she hung her head.

A few seconds later, Luna felt a hoof caressing her cheek, and she looked up. Her sister's muzzle was just inches away from hers, smiling. Luna couldn't help herself but to lean a little further and press her mouth against Celestia’s. The moment that their lips touched, she felt a spark of electricity jumping between them. It wasn't a spark that she occasionally felt while she was shuffling on the wool rug in her room, but one that jump-started her heart. Just like before, she felt her heart race in her chest, but harder. The realization that she was making out with her sister only added to the excitement.

As the kiss continued, Luna caressed Celestia's neck with her free hoof. However, Celestia took a step back, gazed into her sister's turquoise eyes, and smiled. "My turn now," she said softly.

Luna nodded. She laid down, her eyes locked on her sister's every move as Celestia's head neared her thighs. Mere seconds later, her wings shot up as the snow-white muzzle nipped one of her inner thighs.

Smirking at her sister's reaction, Celestia continued. She had no intention to dive into the alluring mound just yet, but its avoidance was proven to be harder than anticipated. Not only did Luna flinch every now and again, but her marehood and the surrounding area were glistening with her juices. And yet, Celestia pressed her lips on the wet patch. It was one thing to taste her sister while under the influence of too much rum, but this was something completely different.

The faint tangy, yet rich taste of the small patch made Celestia realize that none of this was as terrible as she imagined; just a mare enjoying the taste of another mare, or rather, her sibling's taste. She felt her heart beat even faster. Slightly hesitant, she glanced at Luna's glistening vulva, inhaling its aroma with increasingly deeper breaths. A moment later, she snapped out of her reverie and traced the tip of her tongue over the wet, dark-blue crevice, right up to the extruded clit, and without touching the pink bud, she slid down again and probed the tiny opening. Unlike the faint taste of her sister's juices that she had on her fur, this was a little bit too much for her. She paused for a moment and looked up.

"Tia?" Luna breathed.

"I didn't expect this, Lu…"

"Oh," Luna said in a slightly disappointed voice, With what she had done earlier, it wasn't fair that Celestia stopped halfway through returning the favor. "We can—"

"I didn't say that I disliked it, Lu. It was just a little bit… overwhelming… It's certainly not bad, but just a little unexpected…"

"You tried this before, Tia…"

Celestia nodded. "With a little bit of help from a certain pirate captain…"

"Pirate… captain?"

"Rum, Lu. Rum."

"Oh," Luna replied with a hint of embarrassment in her tone, but that was swiftly gone as Celestia pressed her mouth against hers. It was the second time that she tasted herself through her sister, but it was the first time without any hint of alcohol.

And she wanted more.

Once again, Luna flinched as her sister's hoof caressed her mound, but it didn't sway her from massaging Celestia's muscle with her own, nor did it prompt her to break the kiss. Quite the opposite: Luna's forelegs wrapped around her sister's neck, ensuring that Celestia wouldn't stop.

But her worries were unwarranted. With her mouth and nethers being serviced by a different part of a gorgeous mare, Luna started to feel the consequences of her sister's ministrations. All that she could do was cling to Celestia even tighter and await for the inevitable.

And then it happened.

Her body shivered in an onslaught of delight. A single wave, quickly followed by another and another, made her release a small scream into Celestia's mouth. And yet, even though there was no way that Celestia could miss that kind of orgasm, she didn't stop with what she was doing. Not that she would want that, anyways. With the stimulation between her legs still going strong, combined with who was doing it, Luna came hard once again.

Celestia smirked as she paused for a moment and broke the kiss. She was waiting for her sister to catch a breath, her body still flinching from the overload of sensations.

"That was…" Luna said, then stopped abruptly and smiled. "Wow."

"Not bad for the second time?"

Luna snickered. She wanted to reply, but she only watched as Celestia's muzzle caressed her hoof, slowly gliding down the leg. She didn't need to guess twice to where the white muzzle was headed to.

"More?" Luna asked softly.

Celestia nodded subtly and kissed Luna's inner thigh. "Too bad that you aren't a stallion, Lu."

Luna blinked. "Sta…llion? Why?"

"Because I like them?" Celestia mused.

However, Luna wasn't too amused by that answer. Instead, she pulled her legs slightly closer as a response, and it was hard for Celestia not to notice the gesture.

"Luna? Did I do something wrong?" she asked in a worried tone.

"No," Luna replied flatly.

"Then w—" Her voice trailed off when she realized what she said. Her ears fell flat against her skull, and she hung her head in shame. "Oh."

"Yes, oh."

"Luna, I didn't mean it like that…"

Luna looked around. The warm shower inside of the marble-decorated room was still running, and there was still nopony around that would disturb the princesses, especially in the shower room. For Luna, it felt almost as intimate as in her castle, but she wasn't too keen to stay for much longer. She was eyeing the entrance door.

"We'll talk about this at home."

"No," Celestia replied. "Now," she added, the stern expression on her face.

"Fine." Luna took a deep breath. "Go ahead."

Celestia exhaled loudly. "That… wasn't intentional, Luna. It was—"

"You wanted me to be a replacement for a—"

"No, Luna," Celestia cut off her sister. "That never crossed my mind. Not even for a split second. If I'd wanted a penis, I'd open my drawer and grab one. Or two. Or however much I feel like it at the time." She sighed and continued, "I never thought that I'd be aroused by a mare, let alone sleep with her. You did all of that and more by just being you. I don't want you to be a stallion, Lu. I just want you to be… you.

"It's just…" She sighed. "I've always been with stallions, and… as satisfiable as grabbing one of those vibrators is, it's just… it's not the same."

Luna fell silent and hung her head. It took a couple of long moments before she raised her head again with a cracking voice. "S-sorry, Tia. I thought that you wanted—" Her voice trailed off. "I'm not sure anymore what I was thinking…"

"Luna… Lu…"

"I-I'm so sorry, Tia," Luna continued with a waver in her voice.

"Luna…" Celestia gently pressed her nose to her sister's. It wasn't the first time that she had done that. It was something that they did to each other, a sign of affection and understanding.

Luna rose with teary eyes and seeing the genuine smile on her sister's muzzle made her heart switch gears again. With emotions still running high between them, Luna pressed her lips against Celestia's. A flash of blue light briefly illuminated the shower room, but Celestia paid no heed to it.

"Tia?" Luna breathed amidst the kiss. "You really don't want me to be a stallion?"

"No, silly. I just want to—"

"Too bad," Luna replied with a smirk. "Look down."

Celestia slowly looked down. The lower part of Luna's sported a sheath that she had only seen on a stallion. She blinked.

"Luna? I don't…"

"It's all I can muster as of now… And even that is just temporary."

Celestia couldn't shift her eyes from the lump between her sister's legs. "How… how did you…"

"I read it in a book eons ago, but I think that it was destroyed even before I was banished for who knows what reason… Maybe a mare having a stallion's bits didn't sit well with somepony, and…"

"Does it… work?"

Luna shrugged. "I never tried… I just read what it said, but never got a chance to try it on anypony… You can tell there weren't that many mares that would be interested in a mare with a this thing…" She paused for a moment and saw her sister's gaze still transfixed on the sheath. "If you want to play with it...:"

"I… uh… Luna… you… we just… We just had a fight, remember? I don't want you to think—"

"I don't think that anymore," Luna cut her off. "I thought that you knew about the spell and that it was the sole reason that you wanted me. I really should’ve known better…"

Celestia pressed her lips against Luna's again. Without a second thought, Luna threw her hooves around Celestia and pulled her into a deeper kiss. With their lips still intertwined, Luna smiled softly.

"It twitched," Luna breathed. "It's… it's a really strange sensation…"

"Let me see if I can do something about it," Celestia offered. She parted with the moist, warm lips of her sister and lovingly kissed her on her eyelid, making Luna giggle. With another kiss landing on her shoulder and another one on her chest, Luna got onto her back again, her wings spread, enjoying the pampering of her sister's lips. Before closing her eyes, Luna took another glance towards her groin, her pink rod twitching and expanding as it protruded from her sheath.

Celestia caught her sister's glance. She leaned forward and stole a quick kiss from Luna's lips and returned back. With a sly grin, she looked up, anticipating Luna looking back. Celestia took a deep breath, inhaling her sister's unusual scent, and planted a kiss on her chest.

"Um…"

Celestia smirked. She stuck out her tongue a little bit and dragged it over Luna's sheath, making Luna elicit a very nonpony-like groan. In a moment, Luna's limp member became stiff, exactly as Celestia wanted it to be. As Celestia's tongue slipped from the rough surface of Luna's fur to the smooth one of her new appendage, she pressed her lips against it.

Luna gasped.

Celestia paused for a brief moment, waiting for what happens next. Luna, however, said nothing, but a small smile on her muzzle was the affirmation and encouragement Celestia needed to continue. And continue she did.

Her warm lips engulfed the head of her sister's stiff member and traced the mushroom-shape with the tip of her tongue, paying attention to every groove that she encountered.

Luna squirmed but made no effort to break what her big sister was doing to her. An onslaught of new sensations overwhelmed every fiber of her existence, and she enjoyed every moment of it. And as Celestia's lips wrapped around the pink head and gently started to suck on it, Luna started to thrust her hips rhythmically against Celestia's mouth slightly.

A little surprised in the beginning, Celestia quickly embraced her sister's gesture. With each thrust, she bounced back, allowing herself to accommodate more and more of the pink flesh inside of her mouth. It didn't take long before Celestia was happily swallowing at least half of her sister's length.

Luna nervously squirmed. "Tia… Tia, stop!"

With a good portion of Luna's organ still in her mouth, Celestia looked up.

"I'm about to—" Luna muttered.

"Is… that bad?" Celestia replied playfully, the tip of her tongue slowly swirling around Luna's pink head.

Luna shook her head. "But I want you to enjoy it as well…"

Celestia smiled. She lifted her head from the pink flesh, leaned forward, and kissed Luna deeply. Their tongues almost immediately started to play with each other, and a moment later, Celestia found herself under Luna's hot body.

"Tia?" Luna breathed hotly. "What are we even doing?"

"Each other, it seems," Celestia replied with a foalish giggle.

The answer, along with a giggle, granted Celestia another kiss. With it, she wrapped her forelegs around Luna's body, underneath her wings, while her hind legs eagerly caressed Luna's cutie mark. Luna didn’t stay impartial for long as she instinctively started to rub against her sister.

"Luna," Celestia breathed and bit her lip in ecstasy as Luna entered her glistening hole effortlessly, making her squirm. She clung to her sister even tighter and elicited a groan of pleasure when Luna's erection slipped deeply inside of her.

Luna cautiously paused for a brief moment, but her sister's body language encouraged her to continue. With another thrust, Celestia closed her eyes and smiled blissfully. Goodnes, she needed that. Seeing the expression on her sister's face, Luna continued, letting herself be eloped in the onslaught of new sensations. It didn't take long before she sped up like a horny stallion.

Celestia suddenly gripped Luna tightly. The loud groan from her mouth was nothing princess-like. Hay, it was hardly recognisable as a sound that any pony would make. With Luna's thrusts deep inside of her continuing, Celestia finally shivered, and a tremendus orgasmic shockwave rippled through her body as her sister's final thrust pushed her over the edge one more time.

However, Luna wasn't lagging that far behind her sister. As Celestia's vagina contracted, she too was pushed over the edge, spurting a big load of semen into her.

Exhausted, Luna collapsed onto the warm body of her sister, and aside from the heavy breathing emitted from the royal sisters, only the running shower could still be heard.

As much as she had enjoyed cuddling with a mare, Luna's smile waned shortly afterwards, and she finally stood up. The running shower caught her attention for what felt like minutes to her.

Meanwhile, Celestia continued to lay silently, her muscles still sparsely contracting. Aside from when she was fooling around with Luna, she couldn't remember when was the last time she was so overwhelmed with pleasure.

Luna, the only mare that had ever managed to turn her on, was standing only a few feet away, now free of the magical appendage. Even though she was satisfied, Celestia's wings rose up in anticipation as Luna's warm scent teased her nostril.

Celestia giggled. "A bit for a royal thought?" she asked softly.

"You'd be poor, Tia," Luna replied absentmindedly.

"Do tell?"

"This," she said, turning around to Celestia. "I… we… did we made a mistake?" Luna paused for a moment. "If this gets out, what happens then? Between us? Between our ponies? I… we could be seen as selfish, and—"

"Luna. Lu," Celestia spoke in a soothing tone. "All of this is a little bit fast for me as well. If you said a few months ago that I'd be sharing anything more than a friendly kiss on a cheek with a mare, I'd laugh. But now…"

"Yeah. These past few months had been… Interesting for the both of us…"

Celestia silently nodded, paused for a moment and pointed towards the running shower. "To change the topic, I think that we are both in desperate need of a shower now."

"That too. You way more than me. And I'm not squeaky clean either."

Celestia giggled. "Younger ponies first," she mused.

"Don't you mean 'older ponies first'?"

Celestia shook her head. "We could also shower together, silly. There's enough room to squeeze in half of Canterlot."

Luna smirked.

"What?"

"Now you made me imagine some nobles sharing a washroom with an 'icky commoner'."

Celestia laughed wholeheartedly, flicked her horn, and together with her sister, stepped under the much needed torrent of hot water. She closed her eyes and left her mind wander and dig through the silly moments of their pasts as the traces of their act were slowly washed away. She only opened them when something subtly nudged her wing.

Only a few inches away, Luna curiously gazed at Celestia.

"Luna?"

"Tia," Luna said after a long pause. "I enjoyed what happened today. I'm still uncertain if I should’ve enjoyed it as much as I did, but…"

"Luna…"

"I just want to know if we can do it again…"

Celestia smiled. "You are still welcome in my chambers at any time, Lu. I've said that more times than I care to count, and I still have no desire to change it any time soon."

Happy, Luna pressed her lips onto her sister's once again.