Wholesome Family Bonding

by SpoonfedArt

Rating: mature
Tags: Twilight Sparkle, Anthro, My Little Pony: Friendship is Magic, Princess Cadance, Flurry Heart, Fetish, Porn, Sex
Length: 13768

Flurry may act like a brat from time to time, but she truly loves her aunt. Almost as much as she loves huge throbbing cocks. So what happens when you combine the two?

Flurry may act like a brat from time to time, but she truly loves her aunt. Almost as much as she loves huge throbbing cocks. So what happens when you combine the two?

Contains: Futa Twilight, Flurry being a cheeky brat, science experiment gone wrong, incest, dom/sub, massive cock, cock worship, titjob, blowjob, facial, spitting, pussy grinding, breeding.

Flurry is aged up to early adulthood.

An anonymous commission.

Cover art is a cropped version of a (NSFW) picture by steamyart. Derpibooru id: 2701534.

Published 2023-04-11 16:50:01 UTC
Last updated 2023-04-11 16:50:01 UTC

Chapter 1

"How's it going, Aunty Twilight?"

"Whaaa–?"

Twilight spun around in surprise, staring at her visitor.

"Oh, Flurry, that's you," she sighed, relieved. "Please, knock next time, it's not safe for you to just waltz in here like that."

"I'm sure you have everything under control, Aunty. You're the best sorceress in Equestria, after all!" Flurry responded, sporting a cute smirk. She quickly closed the door behind herself before looking around the room with interest. As she turned around, the door's lock was surrounded by a purple aura and gave a soft click as it was engaged by Twilight's magic.

"I've secured everything as much as I could, but that doesn't mean that there are no risks involved. Did you ask your parents for permission, at least?"

"Oh, come on, I'm not a kid anymore! Do I really have to ask their permission for everything?" Flurry cried out in frustration.

Twilight was about to object, but the girl quickly continued. "I've heard you talking with them too. Didn't Mom say that she trusted your judgment on this? She did, right? So I only need your permission."

"Yes, Cadance did tell me that." Twilight shook her head with a sigh. "But you still should've let them know you were planning to go here."

"Well… I'll just tell them afterwards! They're busy right now anyway."

"Hmm, I don't know, Flurry. This thing needs to be treated with care."

"I'll be careful, I promise! I was just so very interested in your research," Flurry pouted. "But I guess if I'm bothering you too much–"

"Oh no, of course you're not, dear." Twilight's expression softened. "Look… you can stay here for now. Just ask me before you touch something. And don't come too close to the artifact. There's a strange aura around it that I don't yet understand." She pointed at the object in the center of the room. Magically suspended above a small platform and fully surrounded by a protective field, it hung ominously in the air.

"I'll be on my best behavior," Flurry replied earnestly. Excited at the opportunity, her gaze darted towards the strange object as soon as Twilight turned away. She slowly shuffled closer, studying it curiously.

The artifact was chiseled out of a large, sparkling crystal, cleaned and polished to perfection. Getting nearer, Flurry couldn't help but note its phallic shape. The sheer girth it possessed almost made her blush. She could even see the thickening in the middle that looked suspiciously like a medial ring. Of course, it was possible that the shape represented something else entirely, but her horny teenage brain kept insisting that it was obviously a rendition of a rather sizable male genitalia.

It felt lewd just to be looking at it. Flurry definitely wasn't averse to engaging in some naughty stuff, but she still took a quick peek at Twilight to make sure that the mare didn't notice her staring so unabashedly at the phallic object. The older alicorn seemed preoccupied with her research.

Absentmindedly licking her lips, Flurry approached closer. Her eyes traced the artifact's smooth contours, noting its crowned tip and thickening base. No way this was anything but a big ol' horse dong! The longer she looked the more sure of it she was. Indecent thoughts ran through her mind as she ogled the thing. She tried imagining what a real stallionhood of such a size would look like. The length, the thickness of it, its powerful throbs.

With such images running through her head, it was no wonder she soon began to feel hot, gently rubbing her thighs against each other underneath her skirt.

"Don't stay near it for too long, Flurry," Twilight's soft voice came from behind her.

Flurry whirled around, straightening up and trying to hide her embarrassment.

"Ah… sorry, I was just trying to get a good look." she gingerly stepped away from the platform. "It has such a… strange form, doesn't it? Do you know what it's supposed to be?"

"I have a few hypotheses," Twilight blushed, pressing her lips tight, clearly hesitating if she should say more.

"Kinda looks like a dick to me, to be honest," Flurry blurted out.

An awkward cough escaped Twilight's lips.

"Ah, well, hmmm… That was my first thought as well… I mean, merely as a scientific hypothesis of course…"

Flurry giggled as the mare tried to explain herself. Now it was Twilight's turn to be embarrassed.

"It's just a part of doing research… And anyway… we're both adults here, so I'm sure you'll treat this artifact with caution, regardless of what it looks like," She recovered her authoritative presence and looked meaningfully at Flurry.

"Yeah, yeah. Definitely!"

"Good!" Twilight concluded with a nod, shuffling the papers on her table. "By the way, I was just about to run a few more experiments on this thing. You can watch if you want. From a safe distance, of course."

"Oh, sure. Sounds… quite interesting."

"Can't promise that it will be as interesting as you expect. My previous tests didn't yield much result," Twilight admitted. "But it's gonna make for a fun little light show if nothing else."

"Well, that's good enough for me, haha."

Twilight nodded, smiling pleasantly. "Okay! Hope you don't mind waiting for a little while, I need to finish with the preparations before we can begin."

"Not at all, Aunty!" Flurry assured her, happy to have more time to look around the alicorn's study.

She tried peering into Twilight's papers at first, but it was nigh impossible to discern any meaning within the mountain of formulas, calculations, and disjointed comments, and she quickly abandoned the idea. There was some arcane equipment in the room as well, but Flurry didn't dare touch it; she didn't think it was an appropriate time to bother Twilight about it either, so she just left it be. And so, very soon Flurry had once again found herself drawn to the magical relic that Twilight was researching.

She circled around it, staying at a moderate distance just as the older mare had warned her. There was definitely something very unusual about this thing – it was no surprise her parents had invited Twilight to study it soon after its discovery. The crystalline artifact was found during an excavation underneath the castle and then locked in a secure room following Cadance's orders. The ever-curious girl, Flurry immediately wanted to see it, but her parents didn't allow her so much as take a peek at the mysterious object until they could verify that it was safe to approach. Luckily, Twilight had always had a soft spot for her little niece, giving Flurry a perfect opportunity to sate her curiosity.

Looking at the phallic crystal now, she suddenly realized why Cadance and Shining were so anxious about letting her view it. More than the danger it exuded, they were clearly worried about the awkwardness that would follow Flurry's realization of its intended shape.

Bwah, but what a stupid reason to keep their daughter away from it! Her parents could be such children sometimes, acting as if she'd burst into flames upon merely looking at the damned thing.

Sure, the artifact wasn't completely safe, and Flurry knew as much. But she also clearly understood that its danger was wildly exaggerated by her dear ma' and da'. After all, Twilight was spending whole days studying it, and nothing bad had happened to her.

Flurry wondered if the older alicorn had the same dirty thoughts going through her mind when she gazed upon the object of her study. She must've, judging by her reaction to Flurry's comment. Did Twilight ever try rubbing or stroking it? Did she ever wrap her palm around this phallic girth and run her hand up and down its smooth crystal surface? Surely, she could easily justify that as an innocuous 'experiment'. Flurry definitely would.

She extended her arm gingerly towards the artifact, feeling warm tingles spread across her fingers. The object's invisible aura slowly enveloped her hand. Flurry could feel a similar tingling down between her legs, but she wasn't sure if that was the crystal's doing, or just the result of her own overactive imagination. It definitely wasn't the first time she'd been mesmerized by a big fat cock.

In fact, ever since she had reached puberty, her mind was drawn to that succulent form on a deep, subliminal level. She had an eagle eye for spotting particularly thick bulges in the guards' pants, quite enjoying making them squirm with her indecent comments. And there was no shortage of prominent bulges around her ever since her own body had filled up in all the right places. The colts of the Crystal Kingdom couldn't help but feel itchy in the crotch at the mere sight of her.

Her breasts grew so quickly that she had to change her bras every few months, while her rapidly thickening butt made it near impossible to fit into all but the loosest of pants. It was no surprise that she soon came to prefer skirts. By the time Flurry reached adulthood, she could nearly rival her own supremely busty mother, and she still kept on growing. Cadance had on occasion joked that very soon they'll be able to share outfits, including their incredibly spacious bras, which always made her daughter go red in the cheeks.

But this didn't stop Flurry from admiring her own body on occasion. She particularly loved checking the pliable squishiness of her H-cup tits, wondering how much larger they would grow. Over time this developed into an instinct, her hands drifting to her chest whenever she felt naughty.

So it was no surprise that now, as her eyes imprinted the image of a huge, erect horsecock into her brain, a subliminal desire to grab her breasts had also begun to manifest itself. It felt like an itch demanding to be scratched, growing stronger the closer her outstretched arm got to the obscene artifact. A strange idea popped into her head. She tugged her hand back, giving her tit a nice squeeze and squishing her nipple between her tingling fingers.

It had an even stronger effect than she expected, electrifying warmth shooting through her chest down into her core. Flurry could barely stop herself from squealing in pleasure at the sudden sensation.

"You're not getting bored there, I hope? I'll be ready to begin shortly." Twilight's voice broke through the girl's pleasurable daze.

Oh shoot!

Flurry ripped her hand away from her breasts, quickly straightening up and turning her head to look at Twilight. She let out a sigh of relief as she saw that the mare was focused on her notes, clearly not aware of what Flurry was doing just a moment ago.

"It's alright!" Flurry flashed a smile at Twilight's back, just in case the alicorn turned around. "Take as much time as you need. Wouldn't want… uhh… any accidents to happen because of me, haha," the girl continued, chastising herself silently.

She really should know better than to start fondling herself at a moment like this! At least Twilight didn't see it, but next time she might not be as lucky. Flurry gave one last longing look to the cock-shaped artifact and stepped away, promising to herself that she wasn't going to stare at it while she waited for Twilight to finish her preparations.

That promise was more difficult to keep than Flurry expected. She didn't stare at the thing anymore, sure, but she definitely stole quite a few glances during the minute that Twilight needed to get ready. By the time Twilight approached her, Flurry was already absentmindedly licking her lips, trying to imagine a real cock of that gargantuan size.

"Let's begin, shall we?" Twilight said, giving Flurry an encouraging smile as she came to a stop in front of the artifact. A clipboard levitated near her, placing itself softly on the table.

"Should I… umm… do something?" Flurry asked.

"Oh, no, don't worry, I'll handle everything. Just stand where you are and don't come any closer."

Twilight raised her hands, and the protective barrier around the artifact dissipated without a trace. Immediately, Flurry felt a wave of faint warmth wash over her body. While she marveled at the sensation, Twilight continued on, channeling a spell within her hand. Strings of light weaved between her fingers, twisting together over her open palm, forming intertwined streams of concentrated energy. Their various colors merged into one, turning blinding white, with a light shade of purple. A dull hum filled the room as the spell grew in power.

Twilight reached out towards the levitating artifact with her arm, directing the magical stream onto it. Light scattered as it hit the crystal, basking the room with multi-colored rays. Another wave of heat engulfed Flurry's frame, this one much stronger than the one before. Tingles spread all over her skin, hair rising on her body. The girl stood in place, frozen, mesmerized by the lights that danced around her.

Suddenly, Twilight cut off her spell, taking an unsure step back. But the lights did not disappear, and the hum only grew louder.

"Something's not right… this is not supposed to happen…" Twilight whispered, both excited and fearful.

Flurry wanted to ask "What's not supposed to happen?" but as soon as she opened her mouth, a blinding light filled the room. She felt the beam hitting her chest even before she saw it. Heat flowed like liquid through her body, reaching from her core down into the ends of her limbs, and then going back, bouncing, turning, until every part of her was touched by flame. She was burning from inside, and yet somehow she also felt numb, weightless, distant.

Only one part of her felt truly real. From between her legs, a new feeling spread. Thumping, quivering pleasure, and a strong desire that demanded to be sated. Amid the heat and that strange pleasure, Flurry felt herself growing weaker, less aware of her surroundings. With the last of her strength, she turned her head to look at Twilight and saw that the mare was faring no better. The twin stream of light emitted by the artifact had captured them both, paralyzing them, doing something that neither of them understood.

Darkness filled her vision as her eyes slowly closed. Awareness began to leave her, and she could do nothing but drift off into involuntary sleep.

"Oh… dear Celestia…" Twilight looked around, feeling numb and dizzy.

She was still in one piece, lying on the floor, but seemingly without injury. Panic was already rising as memories slowly caught up with her, but she was yet too lightheaded and weak to experience any emotion beyond anxiousness and confusion.

Where's Flurry?

Twilight rose up instantly, not caring for the ache in her muscles, fearing the worst. Her eyes scanned the ground in search of the girl. Twilight's vision was still blurry, but it took her only a second to spot the unmistakable shape of Flurry's body.

The young mare was lying exactly where she stood before the incident. She appeared unharmed, but Twilight couldn't be certain.

Why did this happen? And why in Tartarus did it have to happen while Flurry was here?

Twilight had been absolutely sure that she had the experiment under control. It was just a simple transfusion of energy, even smaller in magnitude than she'd tried before. She only wanted to let Flurry see something fun, to make her excited with a safe little light show. Nothing like this had happened during her previous tests…

How could it all go so wrong?

She would never be able to forgive herself if her niece suffered as a result of this.

With her gaze focused squarely on Flurry's frame, Twilight blinked repeatedly, helping her vision return to normal. A streak of white on the girl's body caught her attention. She looked at it intently, trying to discern what it was, anxiously creeping forward on her hands and knees to get a closer look. All she could see was a blob of blue surrounded by a bigger blow of white. But as seconds passed, the lines sharpened, coalescing into distinct forms. Twilight was soon able to see clearly the object she'd been staring at. Flurry's panties.

The girl's undergarments were laid bare to Twilight's unsuspecting gaze, not at all covered by Flurry's teasingly-short skirt. The blue blob was now a picture of the crystal heart, proudly displayed on the front of her tight panties.

Embarrassment crept up over Twilight's cheeks, and yet she didn't stop looking, as if an accidental creep-shot under her niece's skirt might just turn into something else after she stared at it long enough. Obviously, it didn't. On the contrary, Twilight's eyes only picked up additional embarrassing details.

She only stopped when her gaze revealed the distinct shape of Flurry's mound, visible through the fabric. Twilight might as well have been looking directly at the girl's naked puffy cunt.

That was definitely going too far. Only a complete pervert would keep staring, and Twilight certainly wasn't one. She only gave Flurry's teenage pussy a few more juicy glances as she climbed on top of her body, which was a totally appropriate amount.

Twilight was pretty confident that she saw the girl breathing, her chest heaving up and down in a slow rhythm. But just to make sure, she lowered her face down to Flurry's breasts and watched them rise from up close.

Her niece was sure developing quickly, Twilight couldn't help but note, as that huge pair of soft pink tits rocked gently in front of her. Despite Flurry's younger age, her sizable rack has already dwarfed Twilight's. The thought made Twilight feel weird. Her eyes traced the girl's breasts, taking in every inch of naked flesh exposed by her generous cleavage. Flurry wasn't wearing a bra underneath, so her puffed-up nipples protruded visibly through the dress, inviting Twilight's attention. She was privy to the fact that her niece had a lot of trouble constantly outgrowing her bras, so much so that Flurry got quite used to not wearing one at all. But that knowledge never made Twilight feel as excited as it did now.

Ah… 'excited'? Why would I be excited about… ummm… ogling my niece's breasts? I'm just anxious, that's all.

Twilight definitely had reasons to be anxious, but that didn't make her fascination with Flurry's tits and panties any less concerning. It also didn't explain the funny, tingling feeling that thumped between Twilight's legs whenever she imagined herself fondling the teenager's boobs.

Of course, Twilight would never actually do anything like that! Her foremost concern was Flurry's well-being, so she went on to check her chest for a pulse instead. That this action required Twilight to touch the girl's breast was obviously just a coincidence. Before Twilight was even aware of what she was doing, her hand had positioned itself over the Flurry's left tit, fingers itching to give it a good squeeze. What followed next looked more like a lustful grope than any kind of medical procedure, but by the end Twilight could confirm that Flurry had a healthy, measured heartbeat.

The same couldn't be said about her own. Twilight's heart pumped much faster than usual as she felt a twitch between her legs, and depraved thoughts began filling her head.

"... Aunty… Twilight? What… happened?"

The sound of Flurry's soft voice made Twilight freeze in place. To her horror, she realized that her hand was still nonchalantly playing with her niece's heavy tit. Her fingers dug deep into the pliable flesh, and if Flurry wasn't so dazed she would surely be able to feel it.

"Flurry dear, are you alright?" Twilight hugged the girl, stealthily sliding away her guilty hand in the process.

"I think I am. Just feeling a little sleepy," Flurry replied, scratching her eyes.

"I'm so sorry for this. It's all my fault, Flurry, I should've taken better precautions. I had no right to put you in danger like that…"

"Well, I'm not harmed, so it's not a problem, really!" Flurry did her best to assuage Twilight's worries. "I'm feeling pretty good actually."

"Hmm, I really hope you're right. But we'll still need to run the tests to ensure there are no residual effects." Twilight looked Flurry over, doing her best not to ogle her niece's perky tits.

"What exactly happened there? Did the crystal attack us? I remember seeing a bright light coming out of it…"

"The artifact must've activated when I directed a pulse of energy into it," Twilight explained thoughtfully. "I'm not sure why. This was just a probe, supposed to evaluate the object's magical properties. I've done the same thing many times, and the crystal never reacted like that. The only difference today is that you were present…"

"Oh, could that be the reason? Could it be that it activated because of… me?" Flurry wondered, causing Twilight to frown.

"Well, probably not because of you specifically. At least, I very much hope not. But it's possible that the artifact required two ponies to be nearby in order to activate. Honestly… I should've anticipated that." Twilight shook her head in frustration. "Damn it. Why didn't I? Stupid!"

Flurry gave Twilight a cute, reassuring smile. "Don't be so hard on yourself, Aunty. You can't anticipate everything. And besides… we don't truly know if that's really the reason, do we?"

"Yes, we don't. But I can't say that the lack of certainty makes this situation any better," Twilight replied gloomily. "Still, never mind that. That's my problem. The least I can do after this screw-up is to make sure no harm has come to you." She studied the girl carefully. "Are you sure you're feeling okay? If you find it difficult to get up, I can help you, or I can carry you to your room."

"Oh gosh, please no," Flurry laughed. "I'm totally alright, look!" She sat up briskly, raising her upper body with ease. "I was just chilling on the floor, it's pretty comfortable, actually."

Twilight didn't object, though she wasn't sure if Flurry was joking or not when she described the floor as 'comfortable'. The carpeted covering was indeed surprisingly soft, Twilight noted, and she even distinctly remembered hearing Cadance talk about 'improving the hard crystal floors of the castle'. But she also knew that Flurry, like many teenagers, had a tendency to be coy and decline assistance in an effort to appear more mature and self-sufficient even when she legitimately needed it. Twilight would need to observe her carefully in the next few days to ensure she was truly unharmed.

A strange, dark image visited Twilight's mind at that thought. She imagined making Flurry undress under the pretense of running a curse test on her, getting a chance to leer at the girl's stunning young body in all its naked glory. Flurry would surely be easy to convince as long as Twilight pushed the right buttons. Her pink, bubbly ass, her perfect breasts, her thick, squeezable thighs – all of them would be Twilight's to stare at. And maybe even grope if she played her cards right.

What the hell am I thinking?!

The stress must be getting to her. Twilight had her share of intrusive thoughts, like any other person, but this was getting too far. It was as if her brain was constantly trying to turn every situation into some kind of erotic fantasy. And at the most inappropriate of times as well!

Twilight stood up and forced herself to tear her gaze away from Flurry. Surely, her thoughts would clear once she was no longer staring at the sexy young bombshell. After all, that incredible body could make anyone's mind go wild, especially in such a skimpy, revealing dress. Inches upon inches of perfectly groomed pink fur were on full display, sure to invite lecherous stares, and to tease all those who couldn't look away.

Luckily, Twilight wasn't one of such ponies. She wasn't a pervert and found it very easy not to go gawk at Flurry. She definitely didn't think about stealing a glance at her round, perky boobs again, and neither did she imagine uncovering them, nuzzling and licking the soft skin, sucking on her niece's puffy nipples. No, these were the things Twilight certainly didn't think about!

"Aunty Twilight… What is that?"

Twilight steeled herself, turning towards Flurry once again. The girl was sitting on the floor, exactly where Twilight had left her. Her gaze was directed right at the older alicorn's lap. She stared at it so intently that it almost made Twilight uncomfortable.

"What do you mean?" Twilight asked, nervously glancing down. There didn't seem to be anything particularly wrong with her dress, but for some reason, her skirt was rising up in the front. She ran a hand along it and… felt something firm underneath. "Umm… Oh…"

WHAT IS THAT?

With horror, Twilight realized that she didn't just feel a long flaccid object with her hand, she also felt her hand with it. Now that she was aware of its existence, Twilight immediately understood that this strange thing was attached to her. Not just attached even, it was a part of her. All the odd sensations she had experienced between her legs since she woke up suddenly made sense. Now she could map them directly to this new… limb?

Twilight would need to raise her skirt to see what she was dealing with, but she wasn't at all sure if she wanted to do that. Especially considering that her hands were already giving her a pretty solid idea of what she could expect to find. Still, it would be foolish to let her embarrassment prevent her from researching this problem. Flurry has already seen it, so there was no reason to act coy about it, right?

Twilight anxiously grabbed the hem of her skirt and began pulling it up. Seeing just the first inch of dark flesh was enough to confirm her fears, but she continued uncovering it anyway. With a stunned expression frozen on her face, she watched her hands reveal an absolutely massive purple schlong from underneath her dress.

Oh, dear Celestia… I can't look at it…

But look at it she did. The morbid fascination gripped her like a vice, making Twilight's eyes trace the imposing form.

This wasn't just a cock.

This was a weapon. A hungering beast. A tool of conquest. There was no logical reason for it to be this huge unless the plan was to intimidate every mare and stallion into submission with its mere sight.

Even in its softer state, Twilight's dick was already big enough to make any girl shake in fearful arousal. But that was far from the limit. Thick veins ran along its surface, feeding the monster with blood. Twilight's blood.

The realization made her feel uneasy. Twilight's blood was richly imbued with potent alicorn magic, and now it was freely circulating through this terrible, beastly organ, undoubtedly filling it with her divine power. Every throb echoed through the room, sending out waves of oscillating arcane energies.

If Twilight didn't possess near-infinite reserves of magic, she would've been quite annoyed at such a wasteful activity. But right now her issue was much more with the energy that wasn't being wasted. This enchantment was clearly not just a joke or a mere trick. For all Twilight knew, it might even be permanent. Her new cock fit so seamlessly on her body that it was impossible to tell that it wasn't there all her life.

She touched it with her finger, and the sensation felt as natural and real as upon any other part of her. There was a pleasant tension in Twilight's crotch, forming a rising desire to give her dick a stroke, or better yet to get someone's soft lips wrapped around it.

The thought suddenly reminded her of Flurry's presence. Twilight glanced up at her, expecting the poor girl to be deadly frightened by the giant cuntbreaker that her dear aunty was so obscenely displaying. Instead… she was met with eyes full of awe and barely restrained desire.

"I'm so sorry you had to see this, Flurry!" Twilight apologized, sure that her niece must simply be in shock. "Don't worry, I'm just gonna hide this thing and…"

"No!" Flurry's exclamation made Twilight's hands freeze mid-action. "I mean… maybe we should… umm… study it? And try to find a cure?" The girl smacked her lips, emitting wet pops that made Twilight's dick twitch.

"Study… it?" the alicorn stammered unsurely. "You don't have to subject yourself to this, Flurry," she tried to argue, even though there was nothing Twilight wanted more than to rub her thick, throbbing pole all over the girl's pretty face.

'Study my fat cock all you want, dear niece.'

The depraved intention barely even registered on Twilight's mental radar, so mundane it was beginning to seem. She tried her best to keep her composure, but nothing could change the fact that her brain was already searching for ways to justify scratching her balls with Flurry's cute little nose.

"I don't mind it, I swear," Flurry replied sweetly, sending another uncontrollable throb through Twilight's cock. "I would love to help you. Just let me do it, please!"

The desperation in the girl's voice was too much for Twilight to bear.

"Well, I guess we could… hmm… take a closer look?"

Flurry vigorously nodded her head, already inching closer to Twilight's growing shaft. "Yes! Just tell me what you want me to do, Aunty!"

There was no way Twilight could control herself with Flurry staring at her dick like it was a Hearth's Warming’s present. This busty teenage nymph was practically begging to be molested, wasn't she?

"Mmm, how about we start with a little… smell test?" Twilight offered, trying to keep her wording vague just in case. But her true intentions became obvious when Flurry responded with a smile, making a thick glob of precum drool out of Twilight's cockslit.

"So… you want me to sniff your dick, Aunty?" The lewd desire was practically dripping from her every word.

"Yes. And also… tell me what it smells like," Twilight added, levitating a clipboard and a quill next to her. "We're doing science, after all."

She felt so dirty saying those self-serving, disingenuous words. But there was no other way to justify the terrible things she was asking her niece to do. Gone was her mind's insistence that she wasn't a filthy pervert, now the most Twilight could hope for was to use her perversity for good.

"Yes, ma'am!" Flurry answered with enthusiasm. "I love science! One cock-sniffing session coming right up."

Oh Celestia, why does she have to say it like that?

How is Twilight meant to keep her libido in check when Flurry is acting like a thirsty slut? It was as if she was actively trying to validate all of Twilight's wanton desires with her every action.

And nothing could validate Twilight's desires more than the sight of Flurry obediently executing her command, turning an incestuous fantasy into reality. The girl was approaching on all fours, keeping her head at the level of Twilight's drooling cock, watching it intently, taking in every detail. Twilight was sure that Flurry could smell her cock already, but the teenage thot displayed a persistence worthy of a professional researcher, going in for a good, deep sniff.

With her nose just a few inches away from the wet tip of Twilight's fuckpole, Flurry finally inhaled as hard as she could. Her nostrils flared visibly, and Twilight could hear the filthy, dick-infused air rushing straight into the teen's lungs.

Flury's expression instantly turned sour, but she dutifully continued sniffing, eyes fluttering as she concentrated fully on the smell. Her long inhale came to a stop only when her lungs were filled to completion with Twilight's cock-stench. The girl's instinctive grimace began to morph into a satisfied smile, and she exhaled softly through her mouth.

"It's soooo nasty!" Flurry moaned. "So much musk, hehe."

Twilight didn't know if she should cringe or relax at that response, so instead she just got hornier. Her quill quickly wrote 'nasty, musky' under the title: 'First-time smell test. Subject: Flurry Heart'.

"We don't have to continue if you don't like it," she said, still holding out hope that Flurry wouldn't let herself be molested so easily.

"But I do like it, Aunty! I love how filthy your cock smells!" Flurry exclaimed, and Twilight felt her heart sink. But her dick throbbed with happiness! A shiny, syrupy string of pre swung gently under its tip, while the alicorn's quill quietly added 'filthy' to the list.

It wasn't the last descriptor that Flurry applied to Twilight's genitals. 'Yucky', 'stinky', and 'foul' were scribbled on soon after. When Flurry was out of words, Twilight gave a few suggestions of her own, helpfully dictating adjectives like 'putrid', 'reeking', and 'nauseating', to describe the stench that was actively melting her niece's brain.

Their combined effort produced a slew of positive descriptions as well. Flurry added 'addictive' after her third sniff, and then nodded at 'thrilling' proposed by Twilight.

With every inhale, Flurry leaned her head just a little closer to Twilight's dick. By the end she was almost nuzzling it, staying close enough to occasionally graze the fat cockhead with her nose. Her dutiful work had provided Twilight with a thorough description of the smell she'd been testing on Flurry's nose, and the results weren't looking too good for the alicorn's overtaxed psyche.

No big deal, I'm just letting my brother's barely-adult daughter inhale some nasty, addictive pheromones exuded by my cock. It's a totally… umm… normal thing to do in these circumstances, right?

Twilight knew how weak and flimsy her defense was. But if she admitted the truth, she would have to stop. And that, she could not do.

"G-Great job, Flurry. I hope sniffing my cock didn't leave you dizzy?"

"Just a little, hehe," Flurry giggled. Her snout booped Twilight's shaft, and she gladly used the opportunity to grind her nose across the stiff organ.

"The smell test is over, so make sure to get some fresh air too," Twilight advised, still unable to believe how calm Flurry was while huffing her highly-concentrated dick stench.

"But I don't want fresh air! Sniffing your big, nasty cock is soooo much better…"

"Ah… well… if that's what you want…" Twilight murmured. "But we still have to continue figuring out how to solve this issue. I fear our first test didn't provide me with any good hypotheses."

"I've got a hypothesis, Aunty Twilight!"

One look at Flurry's sultry expression was enough for Twilight to know what kind of idea the young mare was going to present. Her cock was already getting prepared to give it a commending throb.

"Obviously, the artifact had emitted some kind of… mmm… sexual enchantment," Flurry spoke, giving Twilight a naughty smile. She pulled her muzzle just a few tiny inches away from the alicorn's dick, and as she did so, a slimy, translucent string of fresh precum stretched out between Twilight's leaking tip and Flurry's nose. While the girl seemed completely oblivious to it, Twilight simply couldn't stop looking at the obscene slop-bridge. She continued staring even as Flurry presented her deeply scientific hypothesis.

"I think… the spell will dissipate once you empty those huge balls you've got, Aunty." Flurry gestured underneath the alicorn's shaft with her snout. "Just gotta squeeze all of that cum out, hehe."

A mighty pulse of pleasure coursed through Twilight's groin, making her cock twitch with excitement. She gave her lip a lustful bite.

Oh fuuuck… she can't be serious…

"I don't know, Flurry… We can't be sure that's how it works."

"Well… it's not like we have any other ideas!"

Flurry raised her muzzle, looking up at Twilight with eager eyes. The string of precum broke off from the motion and fell across her open mouth as she spoke. Sticky slime stretched and contracted between her lips, and once she finished her sentence, Flurry's tongue darted out to lick up the goo, as casually as if she was simply wetting her plush dick-suckers. Flurry didn't even seem to notice it, but Twilight sure did. She saw how the girl went on to hollow her cheeks, trying to suck every ounce of flavor out of Twilight's cock-sludge. The Princess of Friendship didn't know if that was intentional or simply instinctual, but it was hot enough to make her dick jump either way.

"I guess we can try it. We'll cross off one hypothesis, at the very least," Twilight said, and her quill quickly began writing on the clipboard.

'Hypothesis 1. Disenchantment via ejaculation.'

When Twilight was done with it, Flurry's magic suddenly flared around the quill, adding a simple, but surprisingly accurate drawing of an ejaculating horsecock next to the text. It even featured a distinctive vein snaking across the shaft.

"Just a little visual aid," Flurry commented innocently.

"Well then… we should probably begin with…" Twilight studied Flurry's body, giving her perverted mind ample opportunity to conjure all kinds of carnal fantasies. From the girl's beautiful face, down to her fat tits, flat tummy, big juicy ass, and squishable thighs, every part of her was just oozing with sexuality.

Twilight's mammoth schlong was very pleased indeed. Its powerful throbs easily overpowered the quiet voice of reason still present within her head. No longer was the voice asking her to stop this debauchery, instead simply pleading for Twilight to at least go easy on her niece.

"How about we start with some… stroking," she proposed.

Flurry smiled mischievously. "With my hands… or with my boobs?" A light, seemingly accidental shake of her frame sent her huge breasts into a heavy, gravity-defying wobble.

Twilight swore she could feel the weight of Flurry's milkbags by merely observing their hypnotizing movements. And yes, she sure did observe them. Very intently. Twilight's eyes didn't leave the girl's chest until her tits finally settled underneath her dress, though even then it was difficult to drag her gaze away.

"Which would you prefer, Flurry?" Twilight asked in turn, already predicting the answer.

"My boobs, of course!" The teenager beamed. "Nature didn't give me these puppies for nothing!" She grabbed her tits and gave them a good, sensual squeeze. But that was just a start. With a sweet smile on her lips, Flurry began dragging her dress down, casually revealing the wobbling pair of her perky, princessly breasts.

If it was difficult for Twilight to tear her gaze away before this, then now it was downright impossible. It would be a crime not to ogle such a perfect set of tits, and Twilight was definitely not a criminal. She stared at Flurry's naked chest like any law-abiding citizen would. Her only transgression was that she wasn't also jerking off during it, as one should in the presence of such beauty, but that little oversight could easily be forgiven since it was only her first time after all.

Luckily, Flurry was already on her way to resolve that mishap. Once her gown was down, her hands went straight for Twilight's cock, and with such a big target they definitely couldn't miss.

Twilight drew her breath as Flurry's teasing fingers slid gently across her shaft. Even this little touch felt divine. And when the girl began stroking Twilight's dick, her mind nearly went blank.

"Now imagine how good my boobs will feel~" Flurry tempted her. The little rascal clearly saw how weak Twilight was under her touch.

"Booooobs… yeah…" The alicorn drooled at the thought.

"You want to fuck them, don't you ?"

"Mmmm… yes… I want…"

"Then command me, and I'll do whatever you please." Flurry's rhythmically-pumping hands increased their speed.

Twilight had no strength to play coy. After Flurry's open invitation, her dick was fully in charge.

"Pleasure me with your tits, slut," Twilight barked the insult with such sincere bile that it even surprised herself. If anyone else heard it, they would surely believe that she legitimately thought of Flurry as nothing more than her personal cocksleeve.

As soon as she said it, Twilight wanted to apologize. She truly had no intention of denigrating her dear little niece in such a way. But there was no offense on Flurry's face, and before Twilight could even utter another word, the girl was already executing her order.

"Right away, mistress!" She sprung forward, obediently wrapping her tits around Twilight's tool.

To say that it was a tight fit would be an understatement of the century. While an average stallion's cock would've been easily covered by the soft tit-mush, the purple bitchbreaker that Twilight wielded had instead totally dominated Flurry's chest. It spread her breasts, confidently pushing them apart to create a wide valley fit for a royal piece of fuckmeat. Flurry had to pull her head back to prevent the wet cockhead from hitting her chin, but it still ended up rubbing all across her face and leaving a trail of foul goo upon her features.

The pleasure was so great that Twilight almost forgot it was her brother's daughter she was shamelessly defiling with her dick-slime. And when she remembered that fact… it only made her pleasure all the greater.

Twilight has known Flurry since her very birth. She saw her grow from a little pretty filly into a stunning young mare, following her every step of the way. And now that girl was standing on her knees in front of Twilight, eager to submit to her, fat teenage tits grinding across Twilight's veiny shaft while Flurry blissfully huffed lungfuls of her favorite Aunty's cock-stench.

This is sick…

Twilight's cock throbbed eagerly at the thought, happy to confirm the truth of her words. It fed upon the delicious sickness of the situation, drooling out big sticky globs of precum onto Flurry's mane.

After even a mere handjob was enough to bring Twilight to the edge of ecstasy, it would seem that getting to fuck Flurry's tits would leave the alicorn completely satisfied. Yet that conclusion couldn't be further from the truth. Twilight's desires grew together with her pleasure, and her out-of-control libido was constantly urging her to surrender fully to them. With Flurry being the obedient little cockslut that she was, all Twilight needed to do was to vocalize her wishes.

"You're doing very well, Flurry. But how about you use your mouth as well?"

A good half of Flurry's face was hidden by Twilight's gargantuan cock, but she could still see the girl's lips spread into a wide, gleeful smile.

"I was afraid you'd never ask~" Flurry replied, giving Twilight's shaft a loving kiss. A second later, her tongue was sliding across the salty skin. "Should I give you a description of the taste as well?" She asked with a naughty giggle.

Twilight grabbed the back of Flurry's head and pulled her hips back, positioning the tip of her dick right in front of the teenager's waiting mouth. And then she pushed herself inside.

Apparently, that meant a 'no'.

But it wasn't to say that Twilight had abandoned her research completely – she just thought there was something more important that Flurry's hot, moist mouth could be doing.

Twilight didn't regret her decision even for a moment as her niece's soft lips wrapped around her cock and delivered a series of worshipful suckles. Flurry's tongue worked tirelessly underneath the cover, lapping up big wads of gooey precum and constantly massaging the most sensitive part of Twilight's dick. The alicorn rocked her hips lightly, pushing her cock deeper into Flurry's maw, and then pulling it back. Two soft mounds rubbed across her shaft at the same time, pressed together by Flurry's hands.

The girl gave Twilight her all: licking, kissing, and slurping on the alicorn's tip, while also giving her a boobjob – a heavenly double treatment that every stallion in the Crystal Kingdom could only dream about. And dream they'll have to, because there was only one cock that deserved Flurry's best, and it was the huge throbbing monster between Twilight's legs.

It kept spewing out rivers of pre all the while, sending an unending stream of gross, stinky slime directly into Flurry's stomach. It definitely made for an interesting change from all the expensive meals that the young princess was used to. Though judging by the joyful sparkles in her eyes, Flurry might've just discovered her new favorite dish. At least until she got a taste of the pungent gloop churning within Twilight's massive nuts.

It wouldn't be long until Flurry received a large helping of that salty delicacy, Twilight knew. She already felt her cock getting ready to erupt with the biggest cumshot ever witnessed in Equestria. Pleasure clouded her mind as the air around her resounded with noises of wet slurping and flesh rubbing against flesh, soft tit-fat rolling back and forth around her hardened pillar.

And then, suddenly, a series of knocks broke through her carnal haze.

"Twilight, are you there?" A familiar voice spoke through the door.

She saw Flurry roll her eyes with the cock still inside her mouth as they both instantly recognized Cadance's melodic timbre. Could there be any worse timing than this?

"I am. Did you… ahh… mmm… need anything?" Twilight replied, her voice trembling as Flurry took her dick even deeper inside. Thank Celestia she at least locked the door.

"Can I come in?"

"Sorry, I'm… uhmm… I'm in the middle of an experiment! It wouldn't be safe to open the door," she lied through her teeth.

"Ah, okay. Well, I just wanted to know if you happened to see Flurry recently? The staff can't find her anywhere else in the castle."

Oh shit, this is baaaad…

Twilight looked down at the girl, hoping for some assistance. But Flurry simply continued sucking her cock.

"Ahh… Flurry's here with me actually. She's… umm… helping me with my research." Twilight felt her knees grow weak as her cock throbbed harder than ever. She tried to hold her orgasm in but it seemed to have the opposite effect, making her pleasure grow tenfold as she approached the inevitable release.

"She's not giving you any trouble, I hope? Flurry, don't annoy Twilight, and be sure to do everything she says!"

"Don't worry, Mom. I'll be a good little girl~" Flurry pulled her lips off Twilight's spit-polished cock just long enough to respond.

Twilight relaxed as the stimulation momentarily subsided, but that turned out to be a very poor decision. Flurry's mouth was back to doing what it was designed to do in just a few seconds, and the hot wetness around Twilight's tip returned with a sucking, slurping, tongue-swirling vengeance.

There was no stopping it now. Climax hit her with the power of a thousand Celestia's suns. A long rope of putrid white filth shot out of her cockslit, hitting the back of Flurry's throat so hard she almost choked.

"Thank you for taking care of her by the way, Twilight. I'm sure you know it, but me and Shining are both really grateful for all you're doing for us. There's no one we can trust more to set a good example for our daughter…"

Twilight barely even heard what Cadance was saying. Her focus was completely on the ecstatic pleasure that spread through her groin. She pulled her twitching cock out of Flurry's mouth after the first pair of shots and directed the spasming stream of fresh Twi-goo onto the girl's face. Rope after rope of filthy, sperm-rich slime fell across Flurry's muzzle and mane, while her mother obliviously droned on in the background, lavishing Twilight with undeserved praises. The air around was immediately soaked with revolting cum-fumes, of which Flurry got the hardest brunt, nearly losing her balance as the stench and taste of Twilight's potent jizz completely overwhelmed her impressionable teenage brain.

After all the good work they've done, Flurry's royal milkbags had earned a sloppy paint job as well. So Twilight graciously rewarded her new pair of dick pillows with several generous shots of cum, and then even more of it dripped down onto them from Flurry's jizz-coated face.

"So I'm really glad you're here, Twilight. Just tell me if you need anything," Cadance continued, still having no clue that her daughter was getting a cum glazing at this very moment.

Twilight knew she should've felt bad about deceiving her former babysitter in such a way, but her pleasure was just too great to bother with silly things like that. She sighed happily as the last few globs of spunk drooled out of her dickslit onto Flurry's face.

"It's no problem. I'm always happy to help my friends~!" Twilight answered while casually slapping Flurry's cheek with her spent cock. A depraved desire to further taunt Cadance was already growing in the back of her mind, and she just couldn't help herself when the opportunity was so perfect. "We've been having lots of fun together, haven't we, Flurry?"

"Oh yeah!" Flurry replied after swallowing a mouthful of hot, salty jizz. "I love doing research with Aunty Twilight!"

"You aren't hungry there, are you?" Cadance inquired. "I can bring you something from the kitchens if you want."

"No need, Mom. Twilight already gave me some snacks~!" Thick cum-strings stretched out between Flurry's lips as she spoke.

"Okay, guess I'll just leave you to your experiment then. Have fun there, girls!"

"See you later!" Twilight said, finished both with the conversation and her orgasm. Feeling relieved in more ways than one, she rubbed her half-flaccid cock across Flurry's face as Cadance walked away from the door. So exciting the experience was, it was only now that she understood that her dick didn't disappear after the climax.

Fuck…

Twilight was lying on the floor once again, except this time it wasn't as a result of a magical mishap. No, it was Flurry who had convinced her that they needed to continue their 'research', coming up with a new hypothesis moments after their first one was falsified.

A clipboard lay beside her, the disproven idea crossed over with a thick black line. Underneath it was written the second one:

'Hypothesis 2. Disenchantment via penile-vaginal intercourse.'

"Flurry, are you absolutely sure you're comfortable with this?" Twilight asked, feeling her cock begin to rise again as the teenager stripped away her dress. "Have you ever had sex before?"

Flurry scrunched her muzzle, looking both resolute and flustered at the same time.

"Well, I gave handjobs to a few guards. And I sucked your cock just now!"

With only her cute silky panties and a pair of sandals adorning her body, all of Flurry's best assets were on full display. Twilight always knew her niece was incredibly beautiful, but only now did she truly understand what a perfect fuckdoll Shining's union with Cadance had produced. She didn't even try keeping her eyes on Flurry's face as they conversed.

"That's all? So… you're still a virgin," Twilight concluded. Something stirred within her upon that realization. A dark intention sunk its roots into her mind, poisoning her thoughts with a promise of another forbidden delight.

"And what of it? There is no other cock I'd rather lose my virginity to!"

Oh please, Flurry. This is difficult enough without you begging to jump on my dick.

"I don't think that's a good idea," Twilight said, even though her hungering tool was screaming that it was definitely the greatest idea of all time.

"Why not? It's not like you haven't already dumped a gallon of jizz onto my face." Flurry threaded her fingers through her mane, picking up a big blob of spunk that was stuck to her locks. She only gave it one lazy glance before sending it where the rest of Twilight's load had already gone – directly into her royal stomach. The only evidence of Twilight's release that still remained was the glossy sheen that covered Flurry's face and tits, as well as numerous bits of cum that drenched her hair like some kind of stinky glue. Everything else was methodically picked up by Flurry's hands and delivered straight into her mouth immediately after Twilight's climax.

"That's different," the alicorn disagreed. "Cum can be cleaned away," – no matter how pungent and smelly it is – "but there's no way to return your virginity."

Twilight tried her hardest to resist the temptation to deflower her niece. Blowing a load certainly helped in that regard. She was still horny as hell, but at least she was able to control herself. Unfortunately, as her cock throbbed with renewed vigor, Twilight was already beginning to feel her judgment getting clouded once again.

"We still need to continue our research somehow, don't we?" Flurry said, stepping towards the other mare. Her smooth, lightly toned thighs moved gracefully through the air, and Twilight felt a sudden urge to lick them. "The artifact's spell has hit us both, so that means we both need to get off in order to undo it. I'm sure that's why our previous plan didn't work."

Twilight didn't share Flurry's confidence, but neither did she want to stop their perverse game.

"What do you think we should do then?"

"Well, you'll just have to lie there and keep your cock hard and throbbing for me, Aunty Twilight. Shouldn't be much of a problem~" Flurry smirked as she hooked her thumbs under the waistband of her panties and pulled them up. Smooth white fabric pressed tightly into her skin, revealing the contours of her perfect teenage pussy. The natural color of her fur gave a hint of pink to the silk, but her freely flowing juices were already turning it a shade darker. The waistband snapped back with a pleasant *smack* as she let go of it.

Lewd smugness was positively dripping from Flurry's lips as she planted her feet to either side of the alicorn's hips, positioning her crotch above Twilight's erect cock. The throbbing pole seemed to stretch up towards Flurry's pussy. Its immense size was already enough to cover half of the way towards its destination, and Twilight even subconsciously raised her hips to get just a little bit closer. Flurry only needed to bend her knees and they would definitely meet in a hot, wet kiss.

And yet she stayed in place, waiting with a devilish smile as seconds dragged out and the cock underneath her leaked pre in eager anticipation. Her hand lightly stroked her clit through the panties, providing just enough stimulation to let her continue teasing Twilight without denying too much pleasure to herself. She pretended to go down a few times, lowering her frame just a little bit before raising herself up with a playful giggle. And each time, Twilight's dick twitched in response, only to be denied again and again.

"Flurry, please…" Twilight whined. A persistent itch at the tip of her cock was so strong now, it felt like torture, and each time Flurry teased her it only got worse.

"Hehe, sooorry~" Flurry smiled, looking not the least bit ashamed. "Gonna do it for real now!"

Her knees began to bend once again, and this time Flurry didn't stop until her panty-covered pussy was hovering just above the alicorn's swollen cockhead. Twilight's shaft gave a mighty throb and she pushed her hips up, preparing to meet her niece's crotch. A huge glob of dickslime spurted out of Twilight's cock just as they were about to touch.

Only for Flurry to raise herself once again, keeping Twilight's overeager tool just out of reach of her teasing cunt.

"Oopsie~" She snickered and gave her pussy a little rub. "I just wasn't fully feeling it there, haha. No fooling around this time though~!"

Twilight looked at Flurry with great suspicion as the naughty girl lowered herself once again. No way she'd let herself be fooled after all of that!

But there was no trick now, and Flurry's pussy had finally made contact with the throbbing monster underneath. Twilight let out a quiet moan as she felt the soft silk of her niece's panties rubbing against her sensitive tip. It smeared precum all over the fabric, leaving it covered in a sticky, slimy webbing. She could see strings of the filthy lubricant stretch out between her cock and Flurry's crotch when the girl raised and lowered her rump. The image was made more obscene by the fact that Flurry's panties bore a picture of a blue crystal heart, and Twilight's drooling cock was smearing her translucent fuck-goo all over it.

"Flurry, why… ahh… why is there Cadance's cutie mark on your panties?" She asked, feeling morbidly curious.

"Hmm, so you like it, Aunty?" Flurry said with a wink. "Mom gifted me several sets of underwear for my 18th birthday, but I love these the most! They're pretty cute, aren't they?" She grabbed Twilight's shaft and began rubbing its tip across the picture.

"Uhmm… yeah… pretty cute, I guess…" Twilight tried not to think about the implication of grinding her cock across the image of Cadance's cutie mark. As if having sex with her daughter wasn't enough of an insult to their relationship already.

Please forgive me, Cadance…

Flurry clearly didn't feel any such remorse. On the contrary, she looked giddy as she covered her mother's mark completely in Twilight's neverending cockslime. The image looked all cloudy and washed out when she finally pulled away.

"Thanks for the present, Mommy," Flurry giggled. "But it's time for your little girl to do it raw!"

She pulled her panties to the side, finally exposing her virgin pussy. The action was so casual that it took Twilight a few seconds to comprehend that she really was staring at her niece's naked cunt. This was the first time Twilight saw it directly. Even after witnessing its contours through Flurry's paper-thin panties, the novel sight easily made her cock jump. Twilight once again silently promised that she wasn't going to take Flurry's virginity. Because, dear Celestia, it was oh so difficult to stop herself after the young princess had just revealed the most perfect pussy in the world.

Twilight's tongue lolled out of her open mouth as she gawked in wonder at the greatest treasure of the Crystal Kingdom. Flurry's royal pussy seemed to glow with angelic light, droplets of liquid sparkling softly on its surface. A pair of smooth, lightly swollen lips surrounded her pristine pink slit, begging to be kissed and worshiped. And above them sat a small, expertly-trimmed patch of multi-colored pubes, perfectly positioned to tickle the nose of whoever would have the privilege of servicing her.

Twilight felt that such a heavenly image deserved nothing less than to be framed in gold and placed right in the middle of Canterlot's Royal Art Hall, so everyone may bow to it in reverent awe. Yet at the same time, it seemed criminal just to be looking at it! Did mortal eyes really have the right to behold such a godly sight? How convenient, Twilight remembered, that she was a divine being as well… And now she also had the cock to match it.

Flurry didn't even notice the fires that the sight of her bare pussy had set off in Twilight's oversexed brain. She was much more concerned with the fat schlong underneath her, carefully positioning her snatch above its tip. Her wet lips brushed lightly across the tool and in the process exchanged a small amount of her sweet pussy juice with Twilight's pre. Lowering herself further, Flurry let her mound press against Twilight's cock and then slowly slid it along the hot, twitching shaft.

This was just a small taste of what Flurry's pussy could offer, but that was already enough to leave Twilight panting, and desperately craving more. Which is exactly why the little minx stopped at that, delighted to see her aunt struggling to restrain herself. Flurry placed her hands and knees on the floor to keep herself steady, bringing her face-to-face with Twilight as she kept her hips painfully still. The closeness did nothing to dampen her shameless teasing, and only made the smug smirk on her lips all the more infuriating.

"Do you like how my virgin pussy feels on your cock, Aunty?" She whispered and rubbed herself ever so slightly across the tool. Her puffy lips were spread apart by Twilight's shaft, hugging it and sharing their warmth. "Too bad you aren't allowed to fuck it~"

Twilight should've known that Flurry wouldn't miss a chance to taunt her, but she didn't expect the girl to be so brazen about it. Grinding that flawless young pussy on her painfully sensitive cock like a masterful seductress, giving Twilight just enough pleasure to keep her needy and desperate. Where did she even learn to act like that? Cadance and Shining really should've done a better job keeping saucy literature away from Flurry's curious eyes. Seems like it was now up to Twilight to teach her niece some respect for her elders!

Without any warning, she thrust her hips up, dragging her massive dick roughly across Flurry's teasing cunt. The girl bit her lip as her legs shook from unexpected stimulation and bitch-juice leaked from between her legs.

"No one is here to stop me from fucking you. I just choose not to," Twilight replied with a smirk of her own. "It's called 'responsibility', Flurry." She slowly moved her hips back down, letting Flurry feel the full weight and size of her cock. Hopefully, that'll be enough to intimidate her into obedience.

"Re-spon-sibility… huh?" Flurry dragged out the word, rolling it thoughtfully across her tongue. "Is that what you meant when you jizzed on my face while talking with my Mom? I can still feel your flavor inside my mouth, you know. The sticky wetness on my skin… and in my hair…"

Twilight tried to counter with another thrust of her hips, but Flurry moved her crotch forward, leaving the alicorn to fuck the empty air. Their eyes met, and Twilight could practically taste the teenager's smug self-confidence.

So that's how you wanna play…

Twilight angled her hips towards herself, pushing her shaft in-between Flurry's asscheeks. The soft flesh enveloped her cock, and then became palpably firmer as the girl engaged her glutes. That only served to Twilight's advantage, making Flurry's butt grip her dick all the harder as she delivered a couple of aggressive thrusts.

"Don't taunt me, Flurry. You know that's different. We'll clean you up and you'll be as good as new, I promise," Twilight said, but without her cock rubbing across the girl's pussy her words seemed to have very little effect. Grinding on Flurry's butt definitely felt fucking good, but it wasn't enough to teach the young lass some manners.

And after a few seconds of pleasant ass-rubbing, Flurry denied her even that much, pushing herself up and away in order to dislodge Twilight's dick from between her bountiful ass-cheeks. The tight grip of her butt made Twilight's cock bend in the direction of her movement, until it finally snapped back, wobbling heavily through the musk-thick air.

"And what if I don't want to be cleaned up?" Flurry rebuked the older alicorn, her lips stretching into a maniacal smile. "What if I want you to fill my mouth with your nasty cum once again? What if I want you to fuck me and use me, to treat me like your personal cocksleeve and dump load after load into my every hole? What if I can't live without your cock anymore? Are you gonna do anything about that, Aunty Twilight?"

Twilight opened her mouth as if to respond, but no fitting words came to her mind. She didn't know whether she should rebuke Flurry or console her, or even if she should reply at all. No book had ever taught her what to do when her niece came asking to be hatefucked and abused.

Of course, if Twilight was to be completely truthful, she did read a few works that could shed some light on this complicated subject. But it sure wasn't the kind of literature that she would ever use as an example of what to do. After all, depraved erotica from Celestia's private collection was no place for relationship advice.

Or was it?

Flurry hovered her dripping pussy right above Twilight's cock, while the older mare wordlessly contemplated her options. The brutal thickness of her shaft could've intimidated even the most experienced of sluts, but Flurry looked at it with confidence that only the daughter of the Princess of Love could possess. She lowered herself slowly, grabbing Twilight's dick with her hand and brushing its crowned tip back and forwards across her folds.

Twilight saw how her cockhead dipped lightly into the girl's slit, spreading it apart just enough to give a little touch to her inner tunnel. Flurry didn't let it go any deeper than that, but the sight of her immaculate pussy coming so close to penetration was already making Twilight's balls tingle with pent-up need. She thrust her hips up, instinctively trying to force her cock inside, but the size difference between Flurry's virgin opening and Twilight's battering ram of a dick was simply too great to accomplish that in a single stroke. Her tip pressed insistently against Flurry's cunt, squishing the hot, juice-slick flesh.

"I thought you said you weren't going to take my precious virginity, Aunty!" Flurry giggled. "Seems like your cock disagrees~"

She gave Twilight's overeager tool a couple of encouraging pumps and then rubbed it against her clit. An involuntary moan escaped her lips as the broad cockhead mashed against her tender button, and when she pulled it away, her clit was soaked with Twilight's precum.

"Ohh, this thing is gonna wreck me so hard," Flurry mewled, and Twilight could almost see love hearts forming within her eyes.

The girl aimed Twilight's cock at her opening and began grinding on it once again, slowly easing in the thick tool inside. Twilight couldn't help but raise her pelvis in turn as her throbbing dick demanded more stimulation.

"Ah-ah-ah, you're not supposed to do that, Aunty," Flurry chastised the alicorn, getting a hard grip on her shaft to prevent it from moving. "We wouldn't want you to accidentally deflower me, would we~?"

Twilight bit her lip, forced to repress her rising desires. Sexual frustration was already making her dick itch, and with every second of Flurry's teasing, it only got worse. The girl's harsh grip on her shaft felt rough and almost uncomfortable, but it was still miles better than the utter lack of action that the rest of her cock had received. Twilight's crowned tip was the only part of her dick that was truly having fun in this situation, burrowing slowly but surely in between Flurry's legs and entering her warm confines. But that only served to make Twilight more frustrated and needy.

Her cock drooled a constant stream of sticky, slimy pre, and much of it ended up painting the inner walls of Flurry's pussy. The added slickness helped her slide inside easier – a prospect that made Twilight both excited and anxious.

"We shouldn't go any further, Flurry. You can just use your hands… or… uhh… do that thing you did before," Twilight made a desperate attempt to reason with her slutty niece.

"You mean when I was grinding on your cock? But isn't this much more fun?" Flurry said, gyrating her hips, making Twilight's dick slip further inside her. "Ooh, I think I can feel it touch my hymen! Gotta be careful now! I know you want to thrust inside, Auntу, but you definitely shouldn't do it or you might just push it too far~"

Flurry was right, Twilight had to use all of her willpower just to keep her hips from flying up at the speed of light. She wasn't simply denied the pleasure of fucking this gorgeous young pussy—no, she had to actively battle the temptation with every fiber of her soul. And now her frustration was quickly turning into anger. Anger at her cock for getting her into this situation. Anger at herself for letting it control her. And most of all, anger at Flurry for being such a filthy, teasing whore of a niece!

The girl just continued doing the same thing she was doing before, rolling her hips with painful slowness. Not a semblance of remorse could be seen upon her face, only bratty arrogance amid a confident belief that her aunt will be the first to break.

Twilight growled, a whirlwind of emotions threatening to break through. Not once in her entire life had she felt such a strong desire to punish the girl for her transgressions. Her cock was burning with pure animalistic need, an uncontrollable craving to fuck and breed, which was only spurred on further by Flurry's behavior.

She had no desire to play Flurry's stupid games. And, within her heart, she knew she didn't have to endure them. There was an easy option here that would give Twilight all that she wanted, and possibly much more.

Her horn began glowing before she even understood what she was doing. A purple aura surrounded Flurry's body, and the girl's eyes opened wide in momentary shock. It seemed like she was about to say something, before Twilight's magic threw her on the floor like a child's toy. The only sound that escaped her lips was a high-pitched scream.

A light thud sounded through the room as she landed on the soft padding next to the alicorn. Twilight was upon her in a flash, ravenous frenzy in her eyes and a crazed smile on her lips.

Flurry's surprise turned into fiendish joy as she caught her bearings. The young temptress smirked with inexplicable confidence at the face of pure, lust-driven madness.

"Are you gonna lecture me for being a bad girl, Princess Twilight?" She asked in a most innocent voice.

"No, Flurry. The time for lectures has long passed." Twilight pressed her cock against the girl's pussy. "I have a much better lesson in mind for you."

She stayed in place for a moment, contemplating the decision she had already made. Twilight could still pull back and stop this, but she knew she wasn't going to do that. Instead, she rested her hand on Flurry's cheek, savoring the softness and warmth of her skin. Twilight's fingers trailed across the teenager's lips, spreading them apart just a little bit. She knew she could do anything with this beautiful girl. Nothing was going to stop her from violating her niece's pristine pussy. Flurry would accept no less, in fact. And she would happily agree to much more.

Tongue slipped from between Flurry's lips and gave Twilight's index finger a playful lick, as if to confirm her thoughts. The next second, Flurry was suckling on it, looking at Twilight with doe eyes.

That's when the alicorn’s cock reminded Twilight of its existence with a hard throb, and an overpowering desire to thrust forward overshadowed every other thought.

Flurry’s mouth suddenly let go of Twilight’s finger, and a resonant moan emanated from within her. Her pussy was stretched to its limit to accommodate the mare’s invading girth. Twilight let her hips follow their natural instinct as the moist warmth of Flurry’s no-longer-virgin tunnel enveloped her greedy cock. The incessant itch that nearly made her go crazy was undone in one stroke, scratched by Flurry's soft inner walls.

Twilight continued pushing until she submerged herself to the very hilt, unable to stop while even a single inch of her massive shaft remained outside. But its beastly hunger only flared harder. The repressed need within her had been given total freedom, and there was no going back now.

Twilight went for a second thrust without a moment of hesitation, and then a third one, fourth, fifth. Her hips didn't need any guidance. They pushed and pulled. They fucked and ravaged. At this point, nothing could stop them. Not even Twilight herself. She was a machine driven by lust, and her every thought and emotion was made to follow its perverse instruction.

"Are you happy now, you fucking SLUT?!" Twilight barked. Bits of spit flew out of her mouth and hit Flurry in the face, but she didn't even pretend to care. "Is this what you wanted?"

"YEEESSS!!!" Flurry screamed in ecstasy. Red in the face and already out of breath, she was completely powerless before Twilight's assault.

"Then I hope you're ready for your little cunt to get fucking obliterated. Because this is just the beginning." Twilight grabbed Flurry's muzzle, squeezing and turning it for no reason other than that she could, toying with the girl as if she was nothing more than a doll.

"You wanted to know what I was going to do about all your whorish whims, right? Well here's the plan, my dear niece. I'm going to fuck you. And then I'll fuck you again. And again. I'll keep fucking you until you drain every last drop of jizz from my nuts. Every day, until I find a cure for this curse."

Twilight railed the girl with all her immortal might as she explained exactly what she was going to do. Every word she spoke was filled with absolute conviction. This wasn't just a threat or pure fantasy. At that moment, all that she said was exactly what she intended to do.

"And if it takes me a thousand years to cure us, then it would be a thousand years worth of cum that I'll dump into your every fucking hole. You'll be my obedient cocksleeve for however long I need to deal with this. Sniffing my balls, sucking my dick, kissing my ass, and spreading your legs for me every… single… DAY!" Twilight underscored the words with the most powerful thrusts yet, smashing Flurry so hard it dragged her body across the floor.

"Do you agree to be my fuckslave for all eternity, if that's what it takes? Choose now, or I'll find some other slut to fuck. Maybe I should go with your mother?" Twilight almost laughed at the notion. The idea of seducing Cadance right after she took Flurry's virginity sounded completely outrageous, but at this point, nothing was out of question for the sex-crazed Princess of Friendship.

"Noooo, you won't need to! I'll… *ahh*… I'll do everything you say!" Flurry screamed in between her ecstatic moans. "Please, let me be your cocksleeve, Aunty Twilight!"

"That's mistress Twilight for you, bitch." A wad of spit hit Flurry's muzzle, and this time it was no accident. Twilight smiled at the translucent string that sprawled across the girl's nose and then sent another slimeball directly into her open mouth. "Now swallow my drool and say 'thank you'."

"Thank you, mistress Twilight! I loooove you!" Flurry cried out, earning herself another glob of Twilight's bitter spittle.

Her emotions must have been on one hell of a wild ride as the mare she'd known since her earliest childhood insulted her with the most disgraceful profanities and spat directly into her face. Twilight knew that, because she also shared the emotional turmoil as she carried out those terrible deeds. And yet she just couldn’t stop. Her cock throbbed with joy after each insult she hurled at her little niece, demanding more and more. No other thought seemed possible, since Twilight’s mind was already flooded with every imaginable perversity. And she could imagine quite a lot, having consumed a myriad of forbidden books and scrolls. With such a selection of depravities, it wasn’t about whether she would act on them, but which ones she would choose to bring to life.

Every sinful thought brought her closer to the edge, feeding into her ecstasy almost as much as the constant pounding of her hips. She remembered how less than an hour ago, she actually thought that stealing a secretive grope from Flurry’s tits was the peak of her degeneracy. It almost made her laugh. Now, she was casually using the girl’s rack as her handrest, treating Flurry’s flawless body as her personal property. The idea of squeezing her boobs seemed so mundane that Twilight was almost too lazy to do it. Almost.

As soon as she actually groped one, Twilight quickly remembered why she was so mesmerized by Flurry’s royal milkers. They were so big and bouncy that even hidden under her clothes they would've looked obscene. Very few had a chance to see them naked, and much less to touch them, but Twilight could now independently confirm that her niece’s tits were indeed of the highest quality. And the Princess of Friendship had some expertise in that question, given that she was often in the presence of huge divine bosoms.

With such an abundance of erotic stimulation, it was no surprise that Twilight’s balls soon began to tingle, getting ready to sully Flurry’s depths with their filthy, viscous load. She could already feel them aching for a release as a huge mass of sperm-infested goo impatiently churned within. Her hips redoubled their efforts, pounding the girl into the ground with thrusts that seemed to shake the whole room.

It was at this near-orgasmic moment that a sudden ray of clarity shined upon Twilight’s mind. A single rational thought had managed to break through a cloud of hedonistic perversity, informing her of the consequences of her uncontrolled actions. Emptying her nuts into Flurry’s fertile womb might feel mind-bogglingly amazing, but she would definitely regret it once her head has cleared of the lustful haze.

Twilight had no time to contemplate her decision as the moment of her release was rapidly approaching. She had to choose now or it would be too late. Her cock was alight with pleasure, sending an unending stream of signals directly into her brain, all of which were meant to communicate one simple thing.

TAKE HER.

BREED HER.

FILL HER WITH YOUR SEED.

Who could possibly withstand such a potent mental assault? Well, as it turned out, Twilight could. She wasn’t just some kind of run-of-the-mill slut who would simply surrender to her base desires and give full control to her cock. It took all of her willpower, but she managed to wrestle back the authority over her own body, slowly but surely pulling herself out of trouble at the last possible moment.

That is until she suddenly felt Flurry’s legs crisscrossing in a secure lock behind her back. The girl looked at her with a devilish smile, forcefully pulling Twilight inside against her will.

“You aren’t going anywhere, mistress. I am yours forever now, and you’re… MINE!”

Twilight had no strength to resist it anymore. With her escape blocked by Flurry’s shapely, and surprisingly strong legs, she only had one choice left. To slam her hips forward with an orgasmic warcry that made her whole body tremble, letting out a deluge of thick, milky-white jizz into the womb of her brother’s daughter. Each time Twilight’s dick pulsed, fires spread from out her core and a part of her brain melted away, until every single thought and intention was wiped from her mind, leaving only the boundless, primal bliss.

Ropes of cum hit Flurry’s insides with such power that she could actually feel every single one of them. It wasn’t just a constant stream but a rhythmical thumping, as shot after shot of Twilight’s genetic goo was delivered into the very place that it should never touch. The place that knew nothing about morals, perverse magical artifacts, or precarious familial relationships that those might cause.

Twilight’s divinely virile sperm was already traveling at breakneck speed into Flurry’s forbidden depths, feeling right at home within the womb of that stupid teenage slut. Flurry might’ve thought it was cute and quirky to act like a jizz-addicted whore, and that she was getting one up on Twilight by forcing her to cum inside, but her immature brain could not even comprehend the full ramification of her choice. With this little act of disobedience, she had willingly condemned herself to an eternity of worshipful servitude to her new mistress. Twilight knew quite well how to play the long game and break any unruly whore into an obedient fuckpet. For a long time, she had a secret desire to try out all of those lessons she’d learned from Celestia’s hidden stash of pornography, and now she had a perfect opportunity to do just that.

The girl’s destiny has been permanently decided at that very moment, and it was to be nothing but Twilight's personal breeding stock. Owing to that, her formerly bare flank was finally adorned with a fate-binding mark: crystal heart dripping with a viscous white fluid, enclosed like a prisoner within a shining purple star.

Cadance always told her that alicorns took more time than regular ponies to find their talent, and now Flurry would finally learn what she’s been waiting for all this time. The cosmic weaves of fate had made their final ruling, enshrining Flurry's new role as Twilight's submissive cumdumpster, tasked with cleaning the older mare's sweaty taint and draining her massive nuts – a fitting set of dutiesfor the only alicorn on record to be impregnated at the young age of 18.

Neither Twilight nor Flurry knew what yet awaited them, of course. They wallowed in their worldly pleasures, still oblivious to the freshly-minted cutie mark on the teenager's butt, and to the future that it foretold. The last of Twilight's spurts were finishing off her orgasm, finalizing no less than twenty seconds of pure unadulterated bliss. Huge clumps of her hot, glue-thick jizz leaked out of Flurry's climaxing pussy and formed a sloppy, filthy mess underneath. Twilight's mouth hung open while she drooled without care or awareness onto Flurry's face, her expression frozen in a state of permanent ecstasy.

Unfortunately, that kind of pleasure couldn't truly last forever. As her release finally ran its course, she dropped limply onto Flurry's body, feeling warm and welcome on top of the busty beauty that she called her niece. The girl's face seemed like a perfect pillow at that moment, while her huge tits provided much-needed cushioning. Twilight's arms reached around Flurry and squeezed her tight in a close, possessive hug. She didn't even bother pulling her cock out of Flurry's pussy, preferring to keep it warm and snug inside the young brat's thoroughly stretched-out tunnel.

Unbeknownst to either of them, the artifact began to glow with a soft purple light behind them. Twilight's cutie mark materialized within the crystal as it acknowledged its new owner, the process of binding deemed complete.