NOTE: This chapter was partially written by the commissioner themselves. Some of the content, therefore, is not written by me, and some of the fetishes in this chapter are also not shared by me.

** marks the start and end of the watersports scene. Typing Control-F and going to the third one will let you skip it, if that isn't your thing.

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“Are you ready? I'm gonna be using a spell to get rid of any pain this would normally cause so all you'll feel is some pressure and the good feelings. Is that OK?” Sun asked as his flare was pressed tightly to Flurry’s comparatively tiny vulva, his hooves around her hips and croup, keeping her steady as she was mounted on him as he lay on his back.

Flurry nodded and Sun then lit his horn, carefully focused on Flurry’s lower belly, before casting a pain-numbing spell as well as an elasticity spell. He knew a mare’s vagina was designed to stretch, but even with his smaller penis size, he knew she’d likely need help taking him. The pain spell meanwhile was designed to eliminate all pain for a long while, but didn't block other stimulation like pressure or pleasure. He wanted to do whatever possible to cause her the least harm, not wanting this to hurt her as some deflorations would.

“OK, it's done. Here we go.” Sun said after seeing Flurry nod, nodding himself. Suddenly, Sun pulled down on her hips while thrusting upwards, entering the little filly and both losing both their virginity at the same time—

—or would have. Instead, nothing had happened. Sun pulled down and pushed up again, only getting a little squeak and wink of the clit from Flurry, but couldn't get more than half an inch into her, even with the added magical elasticity. She was simply too tight!

“Ok, I'm gonna need to be a little rougher so I can get inside you. Just ask me to stop if you need me to stop.” Sun said, Flurry nodding her consent. Sun then pulled down and pushed forward harder, and harder, until finally he forced himself about two more inches into her ultra-tight and tiny, but very well-lubed, passage at once.

Flurry cried out at the pressure and stretching of being penetrated her first time, feeling a sudden uncomfortable, intense spreading inside of her lower belly. She felt like something inside of her tore when Sun pulled down on her like that, a strange, though not painful, spreading sensation radiating through her after it did. "W-what was…” Flurry exclaimed in panic, trying to get away from the weird, uncomfortable feelings on reflex by trying to pull her hips away, but Sun held her still. Instead of trying to get away for more than a few seconds, she quickly started grinding against him instead to sneak another partial inch into her as another instinct kicked in. One that told her that this was a good thing despite the weirdness, to bear with it and she would be OK. So she did just that.

Sun was meanwhile in ecstasy at the extremely tight warmth and wetness surrounding his stallionhood for the first time, pulses of strong sensation going through him with each squeeze of her extremely tight passage spasming on him, her body struggling to adjust to the substantial girth spreading her immature passage so sharply. Sun knew now that his magic or hooves could never compare to the real thing. A real mare, regardless of her age, was wrapped around his shaft, clenching and squeezing. So very warm…

“Sunny...this feels...so…weird!”

As Sun heard her, he was knocked out of his reverie. He looked up to see her strange expression. “Shh...shh, it’s OK. It’ll feel less...weird soon, I promise,” Sun said with utmost sincerity as he brought a comforting hoof to her cheek and caressed it, with her rubbing back into it in kind.

Flurry, meanwhile, still felt that strange spreading in her filly place. “Why...why did it…?” Flurry asked, her tone one of confusion.

“It always hurts the first time, especially given how...big my pee-pee is compared to your fillyhood, but it didn't because of my spell. You only feel the pressure and stretching of your insides opening like this for the first time, and it will never hurt again when any stallion or colt puts his stallionhood in you. It only would have hurt the first time, I promise.” Sun tried to explain, getting a nod from her.

“OK.”

Even still, despite feeling bad for having to make her uncomfortable at all despite knowing it would be way worse without the numbing, Sun stayed stark still as he felt her insides seemingly form-fit and gently ripple over his length, not wanting to make it worse. Meanwhile, a small inner ring just past her entrance was squeezing him with each spasm, as though it were tightly masturbating him inside of her. He saw a thick bulge inside of Flurry and noticed how it was very visible through her lower belly, realizing later that his member was so large inside of her that it was causing a significant stretching in her, his stallion-sized girth causing her filly-sized belly to slightly distend to accommodate it instead of the much smaller member of a colt her age.

Sun meanwhile glanced downwards and noticed a small trail of tinted-red fluids leak out of her tight passage and onto his pelvis, knowing it was the virgin blood of her now torn hymen, wincing at the sight of it. Despite all of that, It felt so…right to Sun though, to share this with Flurry. To share their first time together, and him to spare her the pain of being deflowered.

Flurry, meanwhile, felt the discomfort start to reduce the longer Sun stayed in her, her insides finally starting to adjust to their much larger partner, the elasticity spell helping immensely. Eventually Flurry’s discomfort faded, the feelings in her fillyhood morphing into the same feeling as when he’d touched her vulva and rubbed it earlier, but...so much better now. The spreading of her insides with his stallionhood was...it just felt so…”Your pee-pee feels really good Sunny…” Flurry cooed with her eyes glued shut, “It’s all big and makes my insides all stretchy...and tingly…and it’s all hard...and...and...it was really weird feeling at first but now it...feels...really nice...? How are you so...inside me?"

Sun simply laid there and let out a massive exhale as he enjoyed the tight insides of his first little filly. "Mmhm. It feels like your fillyhood is hugging me, but on my stallionhood..." Sun replied, and squeezing him she was. Her insides were like a vice, with him unsure he could pull out even if he wanted to until she loosened up some more. Testing the waters, he tried to flex his member, but it was as if her insides locked him in her.

“So, you’re OK now?” Sun asked, seeing Flurry’s uncomfortable expression change into one of pleasure, her hips starting to grind harder against him even with him embedded almost to the medial ring in her.

“It...it feels...I feel all warm and tingly inside now…” Flurry said, feeling an almost burning-like sensation in her tummy, just above where Sun’s flare was. It was kind-of unpleasant, but being stretched by Sun like she was seemed to make it all seem OK. Like this was exactly what was supposed to happen when she felt that itchy-burning feeling.

Sun meanwhile realized that her pussy had gotten a bit warmer around his shaft, her fluids more thick and profuse, but he attributed that to her growing arousal. “Mmm, I’m glad your insides are happy now…” Sun said huskily, his hooves releasing her hips and now softly rubbing up and down her flanks* beneath her fully-erected wings, from just under her wings’ downy under-feathers to her stifles where her cutie mark would be eventually, feeling her squirm at the sensations.

After rubbing her sides for a while, Sun’s hoof moved to Flurry’s belly, gently rubbing that bulge he made in her, able to identify each bump and ridge of his comparatively-massive shaft through her nearly-taut skin. Sun also noticed that with every twitch his stallionhood made inside her, he could clearly see her two tiny teats bounce in correspondence. Reaching up for a quick fondle, he noticed how they were still hard against his frog, before pulling away and resting his hooves on her for balance.

Flurry’s breathing increased to a slow panting, her grinds growing more insistent, and not a sign of pain on her face as she started to quietly whimper in need; a need she didn’t know a cure for. “Sun...I need…something...” Flurry mumbled, her hips still shifting, the feeling of his pee-pee inside of her, just jiggling around inside of her, a really nice feeling to her. But she needed something else. “More...something...more?” Flurry more asked than requested, as though she didn’t even know what she wanted anymore.

Upon hearing this, Sun nodded, seeing her closed eyes and blissful expression, knowing that she was feeling really good inside as she ground her soaked crotch all over his medial ring. Her small pink pleasure pearl peeked out against it all the while, turning him on that much more. “OK, now I’m gonna pull it out…” Sun said, getting a whimper from Flurry.

“No...but...but…” Flurry fumbled with her words, not knowing why, but knowing deep down that she really, really wanted Sun’s willy to stay right where it was, deep inside her.

“Shh, don’t worry, I’ll put it right back in, I promise.” Sun said, earning another displeased whimper from her as she kept trying to grind even as he softly grabbed her in his magic and started to lift her from his stallionhood, with her all the while trying to push back down and grip at his barrel with all her might.

“Please Sun...I...I need it…” Flurry whined, feeling as though each millimeter he slid from her was a little part of her he was taking away; as though it was something vital to her existence that he was sliding out of her now-soaked inner walls.

“It’s OK...I promise...I’ll p-put it right back.” Sun said as suddenly the scent of fertile mare grew stronger in the room, only adding that much more to his lust. He didn’t know why the passive scent was now growing so much stronger since the rug containing Fleur-de-Lis’s fertile estrus scent was locked away in his closet in a magic force-field, but in his altered state of mind he simply couldn’t care, only thankful for it making the sliding of his member against Flurry’s nearly-hot vaginal walls feel so much better.

Suddenly, Flurry cried out in pleasure as Sun, as promised, started to lower her and push his comparatively-massive willy back inside her slowly. She felt each inch, bump, and texture of his member being introduced back into her, the warm hardness she felt that her whole life depended on stretching her open again. “Ooooh Sun…” she cooed, her whole body tense, but a good kind of tense, her inside place where Sun was especially feeling tight. “...you’re...it’s…”

“Y-yeah, it feels good for me too...you’re really warm and tight inside. J-just what a s-stallion’s pee-pee loves.” Sun said, meanwhile meeting his medial ring to the outside of her vulva again, feeling her shudder atop him as another wink pressed her pleasure button to his ring again. A quiet, adorable whimper of pure joy coming from her, along with a small squirt of her filly juice adding to the puddle surrounding his rump on the bed.

Sun smiled as he felt her insides growing tight and rippling around his dick again in the telling sensations of his mare’s orgasm, feeling her winking constantly and trembling as she came again on just the second thrust. “S-SUNNY!” Flurry cried out in an impassioned tone, her hips grinding against his medial ring as her instincts took over, her insides doing their best to milk him of his life-giving sperm.

Sun, meanwhile, was fighting hard to hold off his own orgasm as Flurry’s passage rippled hard from his member’s ring to tip, feeling – and watching through that large bulge he made in her growing even bigger – as he started to flare up, feeling her already crushingly-tight passage growing almost painfully so around his flare, feeling as her forceful squirts of filly-cum dripped down over his testicles. He also felt as his flare somehow went even deeper into her, feeling a tight, puckered ring against his flare; meeting a wall of sorts. Sun knew now that he’d finally met her canal’s very end; her cervix.

“S-SUUUUUUUUUN~!” Flurry cried out as she felt that growing feeling in her, feeling as his flare pushed against something super-duper deep inside of her, it only driving the intense tingling feelings already wracking her to become even more so. Her whole body convulsed as she collapsed onto Sun’s chest, her front legs giving out from the sheer pleasure, and a complete downpour of thick, slightly yellow foal-cream absolutely covered his entire pelvis as a result of her sheer pleasure. With every slight movement, extremely wet, loud squishing sounds echoed throughout the bedroom as a result of their intense pleasure and Flurry’s instinctive grinding. At this point, her back legs were only being supported by Sunburst’s shaft, which was completely bottomed out against her tiny cervix.

Sun, meanwhile, knew he’d cum soon if he didn’t do something, so with his last bit of sentience, he cast a spell on his flared member, blocking out some of the sensations of her rhythmic inner flexing and calming his throbs, his orgasm receding again. Sun, after all, wanted Flurry’s first time to be unforgettable, as well as his own. For now though, he waited for Flurry to calm down from her high, feeling her inner squeezes slowing down as well as her trembles, her breathing starting to resume a more normal pace as opposed to the ragged gasps she took in while her orgasm dominated her.

After thirty seconds of the best feeling she’d ever felt before, even better than what she’d felt with Sun’s hoof rubbing her down there, Flurry finally felt all tension leave her body, a limp puddle of pleasured filly now panting atop Sun, the source of those wondrous sensations she’d just felt. Sun watched as the tiny pink filly squinted while she opened her clenched eyes. “W-wha...wazzat?” Flurry mumbled out, her muzzle buried in Sun’s chest fluff, only her barely-opened eyes meeting his being visible, “W-why do you...your pee-pee top...s-so biiiig…?”

“T-that’s…” Sun replied in a deeper-than-average, husky tone, feeling as though he had just cum despite holding it off, his head still feeling light as air, his flare still like a rock inside of her, “...that’s what happens when a s-stallion’s feeling r-really good from a m-mare’s insides and is ready to c-cum...their f-flare gets all big to keep it all inside.”

“C-cum? Keep 'it’ inside? You mean their pee-pee?” Flurry asked, clearly confused. Sun had never used that term before, after all.

“It’s...it’s another way of saying ‘orgasm’, which is what you just felt. The really good tingly feelings when your insides squeeze down without you doing it.” Sun said, getting a slow, dazed nod from Flurry, who was indeed still feeling the after-effects of said orgasm. “When stallions get their orgasm, they get all big like that and...well…” Sun said, “...well, they squirt what makes the foal inside the mare. I’ll get my orgasm soon too, and you can see then.”

“Oh...OK…” Flurry mumbled out, sure she’d agree to almost anything at this point with how good she felt. Sun still felt all big and deep inside of her, his thick flare putting extreme pressure against something really far in her. Flurry felt him deep inside her belly, making it puff out and appear all big and nice feeling, while making the feelings inside her head tell her this was so good, so right; to make him keep going in and out and in and out. “...you can...keep doing that slide-y thing in my p-princess parts…p-please?” Flurry asked, no small amount of desperation in her tone as she still felt her insides squeezing and squeezing on the hardness embedded in them, as though trying to make it do…something. Something that she didn’t know what it was, just that her inside parts needed it.

Sun thought for a moment, before gently pulling up on her and sliding himself out, with her meanwhile trying to force herself against his superior strength, trying to keep that hard, warm, big thing inside her as that little kinda-voice inside her head told her to do. “Sunny...please...I...I need that…” Flurry mumbled out, but Sun was stronger than her, and she gave a displeased whimper when his thick flare was forcefully pulled from her with a loud pop from breaking suction, leaving her inside parts feeling utterly and uncomfortably empty, “...please...pretty please...put it back!” she said emotionally, fighting back tears from the multitude of emotions currently swirling through her mind and a deep discontented feeling that she knew that only him putting it back in would fix.

After he pulled out, Sun glanced back and noticed that his thick pink member bobbing beneath him, fully flared, now had a noticeable yellow hue to it, still completely covered in Flurry’s orgasmic fluids. So covered in fact, he would think that was his member’s normal color if he didn't know otherwise, the thought alone nearly making him cum all on its own; how he’d pleased her so much to make her gush all over his phallus like that, and so much too. How she'd marked him as hers.

“Please...please Sunny…” Flurry begged Sun, her hips trying to push back against something, anything, her clit winking rapidly and making her fluids drool out more as the burning, uncomfortable empty feeling grew every second he was outside of her. Sun thought it was almost like she was in a full-blown estrus from the desperation in her tone, how swollen and red her fillyhood was, and how thick her fluids were, but he knew she was way too young to be in heat. Surely it just wasn’t possible for a filly to go into heat at her age, so he simply dismissed it as her just being really excited and intense for her first time.

“It’s OK, I promise I will. I just wanna try putting it in you in a different way now.” Sun said, only getting a small whimper from the sexually-desperate little filly. Using his magic, Sun positioned Flurry so that her chest pressed to the cloud mattress, her forehooves folded comfortably under her chest, and her cheek pressed to the cloud with her muzzle's side flat against it. Her rump meanwhile was high in the air, her messy and soaked tail flagged over her back and to the side to the much larger stallion behind her on instinct, the now very unpleasant hot and burning-tingling sensation in her belly and vulva making her clit wink rapidly. “You’re so beautiful down here Flurry…” Sun said, only getting another wink from her, her hips slowly swaying as her cheeks turned a bright red.

“P-please Sun...I need it...your big-end thingy all the way in me to my back thing…” Flurry said, her voice deep and sensual, a tone she’d never used before but that felt so right to use now, “I want your...your pee-nis all the way inside my belly...please...”

At such a lascivious offer, Sun lost control of himself and instantly mounted the little filly, earning a surprised yelp from her as his underbarrel suddenly ground against her croup, sending a strong shock of pleasure up her spine. “Y-YESSSSS!” Flurry shouted out in a half moan, half whinny, her hips pushing back, desperately trying to find its instinctive mate in the form of Sun’s penis.

“F-Flurry…” Sun grunted in some frustration as her hips were swaying rapidly, up and down and to the sides as he was trying to line up to penetrate her again. His glans tapped randomly against her backside and between her teats, or even sliding over her back and along her croup, smearing it all with his pre-cum and her fluids but achieving nothing but frustrating them both more. Finally, with a frustrated grunt after some seconds of this, on some deeply-rooted instinct, Sun reached back, stretching his neck a bit downwards to reach Flurry's head. He then suddenly bit down on her upturned ear.

Flurry gave a quiet, involuntary whimper and stopped moving instantly as that instinctive sign to stay still from a dominant pony was obeyed by her over-enthusiastic body, that slight pressure sending a message to her brain to stop trying so hard and just let what she so desired happen. To let her stallion do what he needed to do in order to get back inside her body.

As Flurry stayed still now, even though her tail, which was wet with her filly-juices, was still impatiently flicking his side, Sun concentrated and let his instincts guide him now that he wasn't actively being rushed or sabotaged by his over-eager filly. Finally, now that he had a moment to concentrate, his first few taps missed again, even with Flurry trying to help by gently shifting her hips towards his flare’s taps on reflex, but soon enough he felt a certain wet warmth give to his next tap more than her plush rump, that sensation making them both gasp. He'd found it again. He'd found her winking, drippy, extremely tight entrance.

Instantly, without the will to restrain himself anymore, Sun’s haunches lurched forwards, but once more Flurry’s tightness foiled his first thrust. He tried twice more, but her whole body only slid forwards at the force, her chest grinding against the bed as she groaned in pleasure at the sensations. “P-please...i-in me…” she whispered, cute desperation in her high-pitched voice, and that was all it took. Lighting his horn, and knowing she'd likely be alright with it if she were in her right mind, Sun gently pressed Flurry to the bed with his magic, bit the mattress as though it were a mare’s crest, and RAMMED his hips forwards into her depths.

Flurry yelped and squeezed her eyes shut tight when Sun’s still-swollen flare was forced inside of her, a less intense pressure than before welling up inside her, her immature muscles again being pried apart so suddenly by something much too big for them. While it was less intense than before, a definite stretching sensation was noticeable at first to the small filly, but now that feeling merged into a mix of weird and tingly, before it then fully faded into that wonderful tingling again much faster than before. Her wings were now fully outstretched against Sun’s sides and flapping stiffly at the sensations, her feathers gave Sunburst a light tickle,stimulating him that much more alongside her ultra-tight muscles clamping down on their partner in pleasure again in a welcoming hug.

“S-SSSSunnyyyyy~” Flurry hissed out as that 'this is right’ sensation flushed through her, her mind telling her that this was exactly what she needed; that this was the best thing ever and how she still desired more, but something else needed to happen to make her totally satisfied. She let out a quiet squeak as her hips started shifting as Sun stayed still inside of her for a few moments, him not daring to move with the vice-like grip her princess parts were putting on his stallionhood as she rippled her muscles along his penis in the same motions as before.

Sun remained still, savoring the less intense milking motion of Flurry's insides - much less than Flurry's orgasm, but still felt wonderful to him. After letting his mare adjust again, Sun started to slowly shift his hips against her, his magic still holding her down gently so she wouldn’t slide again, and felt the extremely pleasurable sensations of her unbelievably tight, ribbed fillyhood rubbing along his shaft as he pulled out. He felt her hips pushing back desperately despite his magic holding her to try and keep it inside her, feeling her winking constantly as her ultra-thick fluids drooled down his balls, sticking to them or accumulating between them on the mattress in a puddle of precum, filly-cum and feminine liquid lust. Her small, pink, winking clit was now stained to be nearly yellow, her thick cum sticking to it with a thick string hanging off, swinging back and forth with each rough hump.

Flurry let out a quiet ‘eep’ as Sun pushed in hard again, defying her tightness with his forceful thrusts, a loud, wet schlick sounding out as that large dollop of Flurry’s and Sun’s accumulated fluids was then forced out and onto the already-soaked mattress. She continued to make an assortment of quiet ‘eep’s, moans, or even quiet whinnies as Sun started a slow, hard-fought rhythm, getting deeper and deeper with each thrust, before finally bottoming out against her cervix again, feeling it shifting back a bit as though to kiss his flare.

Despite the amount of pressure from him hitting her end like that again, Flurry felt his part so deep inside of her tummy that it felt like his thick top part was hitting her belly button, sending another spike of pleasureable pressure through her each time he hit it. “S-Sun...what’s…” Flurry practically cooed out, the 'tickling’ feeling flooding through her full force each time he hit so deep in her like that; like he was supposed to be that far inside her.

“That’s...your...cervi—ohhh Celestia…I’m at your cerv—c-cervix.” Sun forced out as his lust-addled mind finally let him realize that – that he was at the absolute depths of Flurry’s immature passage – barely able to given the sheer pleasure Flurry’s squirming and squeezing caused him. With sweat pouring down his forehead, Sunburst lost any semblance of sentience, running entirely on the instinct to breed now. His feral thrusts grew that much more rapid and rough as he heard the cries of pleasure coming out of Flurry – from his broodmare – in quiet ‘ah’s, him feeling her milking him so wonderfully inside. Feeling like he was breeding his young mare just the way he was supposed to be, getting ready to fill her young, and thus undoubtedly infertile, womb with his hot, virile cum soon.

“W-what…is...my…‘c-cerkicks’?” Flurry asked, a foal’s curiosity showing even now in the middle of the intense sensations of her first breeding.

“I-it’s...a...I'm...all the way...i-inside you…” Sun barely stuttered out, not worrying about the foal's mispronunciation, too enamored by the intense tingles rocking up and down his spine to think about much of anything besides keeping his hips pounding into the little filly princess. “As f-far...as...your...princess parts can...go...” As he said that, as though those words made something click in his animal mind, he made his flat flare mash up against her deepest depths, forcing harder against that ultimately tight ring; the final barrier to her womb."...well, almost."

Sun kept rutting Flurry as hard as he would into a fully-grown mare, his magic holding her steady so she wasn’t constantly sliding forwards with the force and her not protesting being held down at all, too focused on the pleasure he was bringing her. Flurry felt as his penis lit up her inside place with each thrust, intense surges of stronger pressure and pleasure going through her when his flare’s pointed bottom portion rubbed perfectly into a special part of her insides.

Sun ramped his thrusts even harder as his horn lit, his magical force rolling down Flurry’s chest then belly, seeking ever lower. As it swiftly reached its destination, Flurry let out a surprised, and rather adorable, shriek as the sensations coming from her nethers suddenly doubled. That tingling sensation of magic encapsulated her tiny little nipples and clit, making the latter start bulging in and out of its hood that much more at the stimulation, practically touching Sunburst’s testicles, and it would have if he was able to fit himself inside fully. As his magic started playing with and pinching the nipples of her small, foal-sized teats and her clit, Flurry’s legs were fully trembling now, more so than before, her whole body nearly vibrating beneath the rutting stallion above her.

“S-Suuuun~...” Flurry moaned out, her head thrashing on the mattress, everything coming to a climax now. She wished she could wrap her legs and wings around her stallion’s croup and keep him deep inside of her, even if she didn’t know why. The feeling of her insides growing that much tighter, that sense of waning control slowly morphing into that powerful sensation of before, was coming again. “...S-Sun...I’m…I…T-TINGLES!!!”

As Sun heard Flurry say that, he felt her insides instantly growing tighter and starting their powerful, rhythmic inner flexing in her third orgasm as he started to flare, earning a pained groan from him at the further tightness that caused. She meanwhile looked down between her forelegs to see her belly bulging even more obscenely, practically able to make out every feature of his member inside her, almost perfectly outlined in her tight body. From her view, it looked as if he was about to go right into her stomach!

“So...so...d-deep a-and t-tight…” Sun muttered, but his instincts weren’t satisfied. He wanted to go deeper still; he wanted to get his medial ring in, at least. Starting to somehow ram even harder into Flurry, he felt his swollen flare slamming against her cervix hard, their position allowing him to basically piledrive down into her. The little ring was utterly impenetrable at first, but from the constant barrage and by some other factor, it eventually loosened, before finally Sun’s next thrust made his thicker medial ring slide into the near-infernal insides of the filly...and his flare going into her womb itself.

Flurry felt the pressure of Sun going even deeper into her, delirious with the intense pleasure of him going so deep, her eyes rolling back in her head as she helplessly rocked her hips against him while his stallionhood slammed into the back of her womb. **Sunburst felt the complete texture of her insides change as he now was past a barrier that squeezed him beyond her outside vulva. It was almost as if his member’s head was squeezed into a smaller shape due to the sheer size difference and tightness of her womb’s entrance. As he continued to rock his hips with complete bliss, his member was pressed extremely close to Flurry Heart’s bladder, with only a small bit of fleshy walls separating the two caverns unknowningly. As Sunburst rocked his hips inside the tightest thing he had ever experienced, Flurry took a measure of extreme realization as she felt the need to go potty instantly.

“Um…um... Sunburst?” Flurry asked, knowing the emergency she was now feeling in her nethers. Not receiving a reply, she opened her eyes and glanced upwards at Sunburst to tell him of the dire situation she was now coming to. Looking at the stallion currently rutting her, she saw him hunched over her small body with his eyes completely glued shut.

“S-Sunny…I…I..need...to...go potty…now!” Flurry exclaimed towards the stallion. Still in a mind of his own rutting the hottest and tightest thing of his life, Sunburst completely ignored Flurry’s request and kept rutting her senselessly. In a last ditch effort to not go potty all over the bed, she tried her best to squeeze her back legs together to hold it in, but that measure proved to work against her as Sunburst stallionhood rocketed against her now tighter hole, his next thrust pressing directly into her bladder. Unable to hold it any longer, Flurry was in borderline tears as she couldn’t hold it any longer and let out a stream of light yellow and clear pee, combined with the thick juices of her filly-cum.

Feeling more wetness surround his member than a normal orgasm would cause, Sunburst glanced downwards to see the constant stream coming out of his foal with each out-thrust, thinking it was only her filly-cum. A mix of shame and fear for the consequences rolled through her meanwhile, and she was about to say something, when the tingles started to completely take control of her body, causing her to completely forget the naughty act of wetting the bed, herself, and on Sun as her eyes rolled back inside her head. **

Flurry’s orgasm raged on even through the embarrassment, though she couldn’t really care about it at the moment with how good she was feeling. Her body was tingling all over, every inch of her electrified like that one time she’d accidentally flown into a storm-cloud, but not painful at all like that had been, instead making her feel like her whole life had led up to this; that this was what she was supposed to do. That she was supposed to be bred by her stallion.

Sun, meanwhile, could hold off no longer – the feeling of Flurry’s walls contracting around his shaft and medial ring, her womb itself hot around his swollen flare as it pulsed huge gobs of precum into her, and finally her cervix squeezing just beneath his flare nearly tight enough to cut off circulation – finally tipped him over the edge. Sun gave a very dominant breeding whinny as that tension in his pelvis snapped, his hips lurching forwards a final time.

Flurry felt a wet warmth splatter inside her, that warm feeling grow with each of Sun’s member’s strong twitches along what felt like her entire lower belly, slowly pooling inside of her tummy now. It was...nice. It felt comforting, like he was giving her insides a hug on a cold winter’s day. It felt...right. With each pulse from his flare shooting 'what makes a foal' into her, Flurry felt the itchy-burning sensation that had been growing since he’d first put it in her growing less and less intense, until finally, it was gone entirely. She was puzzled, but instead was so caught up in the satisfaction and feelings of her waning orgasm, of the warm semen inside what she didn’t know was her womb, all being all locked inside by Sun’s massive flare as he even still impotently tried to thrust his hips against hers.

Sun, meanwhile, felt as the first burst of his foal-cream gushed from him and slammed against the back of Flurry's womb, chomping down on the mattress hard as he could as he completely lost control of himself. He felt himself humping even still, despite his penis not being able to move at all due to the diamond-crushing tightness of her womb and cervix, his instincts urging him to stay as deep as possible. Flurry reflexively milked him dry, each squirt after squirt of thick, virile cum unloading directly into her womb and surrounding his flare in its thick warmth, Sun finding it felt at least a hundred times as good as when he squirted into the air when he stroked himself; the feeling of something wet, warm, and alive squeezing around his shaft as he came was something he’d never imagined would feel so good.

After a number of seconds of feeling Sun pulse-pulse-pulsing inside her, Flurry’s belly began to expand as more and more semen was forced into her immature uterus, his flare acting as the mating plug it was as it allowed nothing to escape. Flurry started to feel slightly queasy as she was filled more and more, her swelling womb pushing up against her stomach. Her tiny inside space was barely able to fit it all, but still Sun came more and more into her insides, his magic holding her in place so she could take it all.

Finally, when her lower belly looked like it had a grapefruit in it, Sun finally stopped humping against her as his orgasm faded and ejaculation tapered then stopped, leaving only an exhausted, drained, and extremely satisfied and relieved stallion and filly in its wake. He still felt her vice-like pussy, cervix, and womb around him, working in its instinctive way to draw his seed deeper inside of her; the minor upwards contractions along her entire tract from base to flare working to draw his sperm into her oviducts to meet any waiting eggs...which surely didn’t exist given her age, and the fact that she wasn’t even close to the age where she would hit her first heat.

His orgasm finished, Sun went to dismount Flurry...only to drag her along with him, causing her to yelp. “Sun! That feels so weird!” Flurry whimpered, getting a soothing kiss on her neck.

“I’m sorry...it’s not supposed to be stuck like this. I think you’re just too tight still! Try to relax.” Sun said, the tightness and mild milking sensations on his post-coitis boner getting to be somewhat unpleasant.

Flurry’s head was still all fuzzy from that extremely powerful release she’d had and the instinctively soothing warmth and filling of his cum inside her, but did her best to try to relax her muscles 'down there', trying to find the right muscles to control. When he tried to pull out again while holding her in place with magic as he felt her muscles loosen slightly, Sun only earned another quiet whimper and yelp from her. He was well and truly stuck inside of her, he now realized, her cervix having basically sealed his swollen flare into her cum-filled womb.

“I...I guess we’ll just have to wait for me to get soft again.” Sun said, with some dismay, rolling so he was now spooning with Flurry as he laid on his side, still trapped inside her.*** As he laid there, trapped by the penis within the little filly, Sun started to feel some regret for what he’d done as the realization kicked in. “I’m so sorry for doing this this to you Flurry...I just...I…” Sun stammered, unable to come up with an explanation.

Sun’s mumbling was interrupted as he felt Flurry’s wing drape over his side in the manner of hug, hearing a contented sigh from her. “Sunny, I don’t know why you’re so sad. That felt really good except for feeling a bit weird too, and now my insides feel all warm and squishy with your boy-stuff! It's so cool!” Flurry said, bringing a hoof up to a quite large bulge swelling out from her midsection, making her appear to be a few months pregnant with a foal.

Knowing there would likely be no consequences to this provided Flurry didn’t tell anypony about what they’d done, given she was surely too young to g Sun sighed. “Alright, but you have to listen to me sweetie. You can’t, under any circumstances, tell anypony about this game, OK Flurry?” Sun said, feeling Flurry squirming against him, her back grinding against his underbarrel as her clit winked a few final times, practically kissing his testes.

“But...but why not?” Flurry asked, clearly confused, “It was a really fun game! I wonder if Daddy would want to play it with me!”

Sun’s eyes widened and his penis twitched inside of her at the thought of Shining Armor mounted up on his daughter, humping away with that massive black shaft - easily double the size of his own - that Sun had seen earlier, the very same one he’d used to conceive her with; that thought started to make his shaft swell up again. “No! I mean...I don’t think you should play it with your daddy. You should only do it with somepony you love.”

“But I DO love my daddy!” Flurry whined, somewhat upset Sun would even suggest she didn’t love her dad!

“No, I didn’t mean you didn’t love him, it’s just…” Sun said, his post-orgasm mindset making thinking hard. Sunburst then let out a long sigh, unsure how to explain it. “It’s just...you should never do this with your family, or somepony you don’t love. It’s...it’s something special you should only share with somepony really special to you. Somepony you really love.”

“Well, I love you Sunny...so is that why we did this? Because you...love me?” Flurry asked, unaware of the depth of her question.

Sun simply laid there, hilted to just past the medial ring in the foal, thinking. He’d been with Flurry ever since the day she was born, and since then, he’d been by her side, changing her diapers, protecting her from her own involuntary magical surges and teaching her to control them...slowly getting closer and closer to her in a way that went beyond adoptive daughter and guardian. “I...I don’t know. I love you, but...I don’t know what kind of love it is.” Sun tried to explain, unable to tell his true feelings.

Finally, some minutes after he’d cum, Sun felt his flare and shaft had finally deflated enough to slide from Flurry’s cervix and into her very wet and sticky passage, before he pulled out with a wet, loud pop from the breaking suction and a grunt from Flurry. Sun was wracked with guilt now as he still lay there, feeling like the lowest of low as to have taken advantage of an innocent foal like this. He opened his mouth to apologize again as Flurry stood on wobbly legs and walked towards him in an awkward gait, huge spurts of his nearly ludicrous amount of cum virtually gushing from her abused and reddened foalhood with each bowed step – all unsurprising given just how rough he’d been with the delicate filly – but was interrupted when he felt Flurry’s wet, bright-pink lips pressed to his.

Utterly surprised at Flurry giving him an inexperienced kiss, Sun was simply stark still at the sensation, feeling Flurry’s tongue licking his lip once before she pulled away a moment later. “Mommy and Daddy kiss like this all the time, because they really love each other. I love you too Sunny, a lot.” Flurry said with utmost sincerity, an earnest love that even Sun couldn’t deny was real, “You always help me when my magic gets all weird, you tell me how to make it get not weird, and...and you’re always playing with me and…and I really liked what we just did. It made me feel...special, like you always make me feel...and...” Flurry said, but was cut off as Sun pressed his own lips to hers again, interrupting her.

They shared the kiss for a short while this time, both amateurishly making out as their tongues danced across each other’s lips, licking each other’s teeth and pressing into each other in a firm embrace, until Sun finally broke it as he heard Flurry’s stomach grumble, clearly telling him she was hungry. “Come on, let’s go clean up. We can...we can think about this more later, after dinner.” Sun said, getting a nod from the filly. Glancing from the doorway into the room they just occupied, Sunburst let out a small chuckle as he saw the mess that remained on Flurry’s mattress. A very obvious puddle of fluids were soaked into the cloud that no doubt contained copious amounts of sweat, tears, semen, pee, and foal-juice. It smelled like concentrated sex. The room smelled amazing to the stallion.

As he walked into the hallway of the castle alongside the little filly as they headed towards the nearest bathroom, with him carrying the exhausted and cum-draining filly on his back, Sun saw a family photo of Shining Armor, Cadence, and Flurry Heart hanging on the wall and couldn’t help but sigh. He knew Shining and Cadence would find out eventually, in some way, that he'd fucked their little filly, and could only hope they didn’t vaporize him on the spot. For now though, Sun would live whatever of his life was left, and that started with a bath for Flurry and himself.

Meanwhile, a guard was writing a letter to Shining Armor and Cadence, detailing what he'd just seen happening to the Princess. Before long, it disappeared in a flash of magic, arriving at its destination shortly after.

Author's Note

*- ‘flanks’ as in her sides, not her butt.

** - this section was written entirely by the commissioner. I did not write this, and am totally not into watersports, despite it being realistic, as it’s just not my thing. Please don't ask me for writing watersports stuff in future commissions, unless the commissioner is willing to write it themselves.

*** - This scene is the coverart, by the way.

~

...and thus ends another (quite interesting) commission. Thanks again to 'Frost' for the commission.

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Until next time, I'll see you all in the comments section, my previous stories, or my next story. Au revoir et à bientôt!!