Rainbow Dash’s eyes shot open and the pegasus threw her legs under her, launching herself into the air and quickly glancing around the room. “Hello?” She yelled, spinning in a quick circle, hooves raised and ready to strike.

The room however, was devoid of enemies, and was completely empty, silent red brick walls surrounding her on all sides. “What the hay?” She muttered.

She clopped a hoof against the ground, feeling that there was indeed thick stone beneath her. “No way I’m getting through that.” She remarked sadly.

Taking to the air once more the pegasus flew around the room, tapping the walls, floor and roof seemingly at random, remembering a story where Daring Do had found a false wall after tapping on a loose stone. Except here, there was no obvious loose bricks, only stone stone and more stone, and her efforts turned out to be completely futile.

With a sigh she landed on her butt in the centre of the room. “How the hell am I going to get out of here?” She angrily yelled.

Her eyes suddenly went wide, and she covered her mouth with both forehooves. “If there are no doors or windows, that means I’m going to run out of air!”

Just like in Daring Do and the temple of Poseidon! She thought to herself.

She hastily turned in a circle, hoping against hope that her first scan had actually missed something, only to come up empty hooved. “Oh no.” She whispered.

Despair threatened to over take her, but she refused to give in to despair so easily.

With a cry of anger she surged to her hooves and reared back before slamming her forelegs into the ground as hard as she could. The stone didn't yield an inch, but despite that and the pain that lanced through her hooves, the pony reared back and stomped again and again and again.

“You won't hold me you stupid tower!” She yelled. “I’m Rainbow fucking Dash!”

The pegasus threw her back into it, slamming her hooves into the ground with every ounce of fury she could muster until she felt something slip inside her leg, making her topple to the ground in an agonized yell. “Fuck!” She screamed, cradling her limb and grinding her teeth.

As she lay there incredible pain she wondered what the other girls were doing, her thoughts lingering on Fluttershy and how terrified she must be to find herself alone in such a creepy castle, with no obvious methods of escape. The pegasus sighed, trying to force herself to think rationally, but being too angry to really muster anything. “Damnit Twi, why did you have to turn evil? I could really use that big brain of yours right about now.”

With a sigh she stood back up, putting less weight on her injured forehoof and giving her head a firm shake. The mare forced herself to focus on the wall before her, trying to remember if there was anything in one of her Daring Do novels that could help her pick out which could be loose.

Completely unnoticed by the pegasus, her shadow began to lengthen, before growing larger and larger before filling out considerably. The creature within pushed itself upwards, forcing the darkness to stretch and grow as it's body rose from her shadow, becoming more solid as it grew. As the strange creature rose up it became more and more substantial, it's features now able to be discerned amidst the amorphous mass of darkness. It’s head was the first to become visible, along with a fearsome visage complete with horns, muzzle and glowing blue eyes which stared intently at the pegasus’ backside.

Within seconds the entire head and neck had risen from the darkness, all of which was completely unnoticed by the pegasus who was muttering to herself as she prodded the bricks. “What was the rhyme again? If it's loose touch it's kaboose... No that's stupid.” She scratched her head. “I really need to read Daring Do and the cavern of souls again.”

The shadow creature smirked to itself, pulling one hoof from the pegasus’ shadow, followed by another, and then a set of leathery batlike wings shortly thereafter. The creature’s body was sleek, slim, though it had the distinct bulge of muscles just beneath it's flesh they were toned, and athletic, perfectly mirroring the pegasus’ body. With one last tug, the creature pulled it's back legs and spade tail from the darkness of the pegasus’ shadow, it's body now completely free.

Rainbow Dash sighed, giving the brick she had been staring at a light tap. “Well this sucks.” She grumbled, turning back to the centre of the room only to stop and duck under a hoof. “Whoa what the fuck?”

Rainbow Dash dodged a second punch before dipping under a third and rolling off to the side, putting some distance between herself and her attacker.

With breathing room now secured she got her first good look at her assailant, instantly noting just how strangely featureless the creature’s body was. Though she could tell the outline of it, and could tell that it was well muscled, the finer details of the creature’s body seemed to blend together, as if it's fur was so dark that it absorbed the light itself. “Who the hell are you supposed to be?” Dash asked, while lowering into a more defensive stance, wings splayed.

Though the creature had no mouth to speak of Rainbow Dash was strangely certain it was smirking at her. With a flurry of motion the creature opened it's wings, and shot into the air, leading with a right hook aimed straight for the pony’s jaw.

Ducking under the blow took every bit of speed the pegasus to muster, and the follow up downward strike nearly caught her in the back as she rolled out of the way. Bringing her hooves back under her Rainbow Dash pushed hard, launching herself into the air, and over a leg sweep that the creature had nearly caught her with. The monster had evidently not believed Dash could dodge such a swift strike, and was thus left open with her hooves down. Using this moment of weakness, Rainbow Dash brought her hooves down in a one two punch aimed at the creature’s eyes.

Yet the strikes didn't connect, the creature’s wings surging with such strength that it was able to launch itself out of the way just milliseconds before the pegasus’ hoof had been about to connect.

With a distance now between them the two combatants began to circle each other slowly, their eyes narrowing as they stared one another down.

Rainbow Dash noted the pointed horns that emerged just over the creature’s large eyes, as well as the thumb like appendages at the top of the creature’s batlike wings. They would surely give the demonic creature an edge if Rainbow Dash didn't keep an eye on them. Advantages or not the mare refused to believe that she would be bested by some mere monster and had already begun trying to figure out her weakness.

The demon meanwhile, fluttered it's wings, a smile on it's face as it circled the pegasus, it's expression calm. Just as Rainbow Dash was about to ask what it was doing, she breathed in through her nose, catching a whiff of the potent smell of sweat tinged with something… stranger. The pegasus couldn't quite place it but it reminded her of the time when she had worked out with Derpy and the shy bubble pegasus went home without showering.

A small heat bloomed in the mare’s nether regions, though hardly noticeable now, it seemed to increase in intensity with each breath she took. Shaking her head, the pegasus dismissed the strange notion and all such thoughts from her head, she was on the clock, and judging from the fact that the creature didn't seem to need to breathe, it was evidently trying to wear her down rather than outright beat her.

“Who the hell do you think I am?” Rainbow Dash yelled, launching herself back into the air and surging towards the still smirking demon.

The creature rolled to the right, dodging the first hook and blocking the second before following up with her own right left combo, which Rainbow Dash was barely able to block in time. Though she had managed to stop herself from being punched in the face, the blows still stung, having no doubt given her a sizeable pair of bruises where the creature’s cloven hooves had impacted her limbs.

With a growl building in her throat, the pegasus ignored the way her body seemed to heat up, focusing instead on using her wings to give her a better height advantage, and hopefully bring her over the creature’s defences. The demon was fast though, managing to match the pegasus’ speed and leaping into the air barely a millisecond later. Hooves connected with hooves, right with left, left with right, back and forth before Rainbow Dash dipped to the side, trying to catch the demon off guard, only for her to turn, spinning left.

Forced to match the creature’s movement Rainbow Dash continued right, her wings pumping hard as she spun in a circle, eyes latched firmly onto the demon’s. For a second it seemed as though they were back into another awkward stalemate, only for the creature’s leathery wings to suddenly twist, sending her flying directly into Rainbow Dash’s path. The pegasus’ feathered appendages lacked the quick turning capabilities of the demon’s leather ones and with a panicked growl Rainbow Dash flattened her wings against her back, dropping her to the ground and barely out of the kick that would have struck her square in the nose.

The pegasus knew the position was an awkward one, with her opponent now over her, and she had to act quick lest the demon followed up on that opportunity. Wings and hooves pumped and the pegasus lunged forward, hoping to dodge whatever had been aimed for her exposed back. Yet there was no whiff of air that came when dodging a blow, and a second later the pegasus’ confidence was blown away when a heavy weight collided against her.

Rather then the fast hard blow of a hoof, the creature seemed to have draped itself over the pegasus, pinning the speedster’s wings against her back and grounding her. Rainbow Dash tried to reach above her head in order to grip the demon’s muzzle and throw her off, yet each grab and desperate punch was dodged with irritating ease. She was open, completely defenceless and unable to fight back, yet the pegasus did not feel the rain of blows she had thought were coming, instead the demon seemed content to merely hold the pegasus’ wings down.

With a grunt, Rainbow Dash felt her legs buckle, the demon knocking out the backs of her legs and forcing the pegasus to the ground under her. With a strangled cry Rainbow Dash toppled to the floor, the demon on her back pinning her before Rainbow Dash even managed to put up a fight. “Get off me!” Rainbow yelled, thrashing as best as she could.

The demon said nothing, merely holding the pegasus down as Rainbow Dash continued to breathe harder and faster, unknowingly causing the heat inside her to bloom to far greater heights. The pegasus’ struggling slowed, her mind finally catching up with the fact that the smell from before had returned, only far more intense than ever before. It was intensely arousing, and it made her stop for a split second, her desire for freedom temporarily lost amidst the waves of heat pounding against her psyche.

Shaking her head, the pegasus grit her teeth and tried to throw the other creature off by pushing with her fore legs. Predictably, the demon shifted some of her weight forward to further pin Rainbow’s fore legs, then before she had a chance to shift again Rainbow Dash put all her strength into her back legs, dropped her forelegs and launched the demon over her head.

With the weight off her back, Rainbow Dash shot into a standing position, wincing when her weight settled on her injured foreleg. She wouldn't let herself get distracted again though, and she forced herself up, ready for whatever cruel attack the demon would level at her next.

Yet the demon was just standing there, wings against her back, smirk still plastered on it's lipless face. Rainbow Dash found herself paralyzed, baffled by the sudden turn of events. “What do you want?” She muttered, a little weaker then she would have liked.

The demon smirked before taking a step forward, wiggling it's entire body a little as it did so, drawing Rainbow’s eyes down her muscled form, back along it's sides and finally to it's amazingly toned flanks. The pegasus had to physically shake her head to keep her eyes from being drawn to the demon’s strangely erotic form. It was difficult, but Rainbow Dash managed to tear her gaze up to the demon’s blue eyes only to find herself similarly disarmed.

Those eyes were so deep, like twin pools of lust, which the pegasus found herself toppling into head over heels. Rainbow Dash remained motionless, even as the demon approached her, the sultry walk causing Rainbow Dash to shiver in anticipation. It was the walk of a being on a mission, it promised her pleasure without end, and fulfillment of her every desire and the pegasus simply didn't have the strength to resist her.

The pegasus found herself wondering what exactly was going to happen, the tension having just blown out of the room so suddenly that she wasn't sure if the demon was going to fuck her up or just plain fuck her. She considered resisting, considered maybe fighting back against the demon’s influence, but that's all it was, a mild consideration. Rainbow Dash was hooked on this strange, demonic creature, from her muscles, to her speed, to the feminine yet still powerful way she held herself.

It was like a pony had found out her every kink and desire and had rolled them all into a perfect ball and then gave it horns, it was too good to be true.

The demon drew closer, now mere inches from the stunned and staring pegasus. Her stance was loose, her wings pressed tight against her back while her ever present smirk could be still seen on her lipless face. Rainbow Dash tensed slightly, unsure of what was going to happen when the demon closed the distance.

Until she was barely more than an inch from the pony’s muzzle, her smirk disappearing, her eyes glowing faintly.

Rainbow Dash knew what was going to happen, and though a part of her still rebelled against it, she did not physically resist.

Closing her eyes, the pony pursed her lips, waiting for the touch she knew was coming. Sure enough a second later the velvety smooth lips of the demon touched hers, making the small fire burning inside her to explode into a raging inferno of insurmountable lust.

Rainbow Dash all but melted into the kiss, her muscles falling slack as her mind all but gave up, giving into the demon’s lust. When the demon pressed forward, Rainbow Dash relented, allowing the creature to push her back, deepening the kiss. The formerly lipless demon pressed against her, forcing the pegasus’ lips open and slipping a long, serpentine tongue into the mare’s mouth. The feeling was a strange one, and Rainbow Dash imagined it was akin to making out with a snake, yet even with such a strange thought in mind she was forced to admit that it felt really, really good.

Moaning into the kiss, Rainbow Dash felt the demon’s hoof caress the soft underside of her chin, further drawing the mare in while ensuring her defences stayed down. Her eyes closed, her body finally relaxed completely, the mare having completely given into the desires of the demonic creature. The demon seemed to sense this, pushing a little harder and seeing when or even if the pegasus would resist her advances.

The pegasus’ will had been firmly broken, and even as she felt the demon’s tongue invade her mouth she did not fight back. With a smirk on it's face the demon shoved forward, pushing the mare to the ground with a firm, dominant hoof.

Even as she felt her body topple to the ground, Rainbow Dash didn't even think of fighting back, her mind and will utterly subsumed by the intense desire to simply give in and get relief for the fire burning inside her.

She looked up at the demon, her hooves clenched tight against her chest as the pegasus wondered what her new mistress would do to her. The demon smirked, a pair of lips and a mouth having emerged from the formerly lipless void. It trotted around the fallen pony, eying up Rainbow Dash’s form and smirking once more.

“C-come on.” Rainbow Dash whimpered, covering her sopping wet pussy with her tail. “I need it.”

The demon stopped, and raised an eyebrow, as if asking for further clarification.

She gulped. “Please fuck me. That's what you were going to do anyway, right?”

The demon smirked again before nodding, walking back around to the mare’s other end the demon reached down and forced open Rainbow Dash’s back legs before slipping between them. As she walked further up the pegasus’ she did the same to the mare’s forelegs, only having to apply a slight amount of pressure before Rainbow Dash relented, allowing the demon to simply take what she wanted.

Their lips met, their bodies pressed together and Rainbow Dash was instantly transported to a realm of pure, absolute pleasure. It was an undeniably strange experience but something about the way the demon moved, her strength, her speed, everything about her was exactly what Rainbow Dash had always wanted out of a lover.

She was everything the pegasus herself wanted to be.

The demon pressed forward, their bodies meeting and the demon’s soft fur caressin Rainbow Dash’s body in an almost sensual manner. The pegasus shuddered in pleasure, the sensation of such perfectly soft fur making her even more aroused as well as relaxed at the same time. The kiss deepened once more with the pegasus relinquishing control of her mouth as well as the rest of her body to the hungry demands of the demonic being.

As their bodies touched, Rainbow Dash could feel the weight against her increase, and though she couldn't tell, the demon visibly began to sink into the mare’s flesh. Their pussies suddenly connecting with the demon mashing their dripping sexes together with such a sudden intensity and catching the mare completely unprepared.

Rainbow Dash could feel her very soul begin to melt under the intense feeling, an experience that only grew even more intense when she felt the demon lean into her, grinding herself against the mare. The weight, the way the demon moved, the way she so effortlessly dominated her body, everything was just perfect, leading to the perfect storm of lust. Even as she felt the weight on her chest begin to lessen she did not open her eyes, the demon’s form melting into the pegasus’ own more and more with each passing second.

The tongue inside her mouth seemed to lengthen, growing thicker and extending down her throat, though somehow not cutting off her supply of oxygen. The mare moaned, feeling the same flowing sensation as something wet and slimy slipped down her nostrils, in her ears, as well as quickly filling her pussy and ass with thick appendages of unknown origin.

Her eyes rolled into the back of her head, a ragged moan slipping past her lips as she felt her very soul be violated by the cruel demon. An orgasm exploded throughout her body, seemingly coming out of nowhere and causing the mare to twitch randomly as she rode the strongest orgasm of her entire life.

An orgasm that didn't seem to have an end, even as the seconds blended into minutes she continued to cum, harder then ever before. The slippery appendages penetrating her every hole and pore seemed to speed up and the mare could feel her body begin to grow heavy. Organs rearranged themselves, horns growing just above her eyes, while her wings lost their feathers, growing thick membranous sections where there had not been any a moment earlier. Her mane and tail lost their distinctive color, becoming an pitch black with a thin streak of blue running through it while her fur darkened until it became as black as the night itself.

As the orgasm continued the mare’s mind fractured, her fragile psyche crumbling under the weight of the changes, as well as the seemingly endless pleasure. It was beyond mere words, and soon Rainbow Dash found that the weight was lifted completely from her body, the demon having vanished, though it's presence lingered.

They were one, and that pleasure of change echoed in her mind, the cracks in her sanity being filled by an otherworldly presence, until there was no telling where Rainbow Dash began and demon ended. With a shuddering heave the pleasure ended abruptly, her orgasm leaving her sprawled out over the ground, tongue hanging out of her mouth.

The mare shook her head, standing on shaky hooves she looked around the room, instantly realizing she was now alone, and that her body had been completely and irrevocably altered. She stared in awe at her now black hooves, and equally as black mane, noting the thin stripe running through it, before smirking to herself and flexing her powerful muscles as she struck a pose.

“Oh fuck the hell yes.” She smirked.

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