"You've been really happy with yourself lately," remarked Kim to her older brother Kyle.
Kyle paused that repulsive, pornographic anime he always watched while mom and dad were away. "Say something, dork?"
"I was wondering why you have the stupid smile on your face all the time," she retorted.
"Because I discovered something really cool about this town and I taught that slut Jennifer the biggest lesson of her life," he gloated. "Oh yeah, mom said no boys over tonight while she's gone."
Kim pouted. She'd been hoping to spend time with Bret, a football player she'd been working hard to get the affections of. She'd even joined the cheerleading team in spite of not particularly enjoying the hobby. "Come on, Kyle..."
"Nope!" he taunted. "But if you're bored, we can play a game."
"I don't want to play any of your loser games."
"Transform or Dare?" he challenged.
"What?"
"Pick one. Seriously. You'll be sorry if you don't," a small amount of concern showed in his blue eyes.
"Dare. Why the hell would anyone pick transform?" she ran a small hand through her blonde hair.
"Ha! Okay. I dare you to go to your room until I'm done watching my hentai!" he chuckled.
Now that he mentioned it, she did feel like listening to some music up in her room.
"Whatever, jerk. I'll be up in my room."
Kim lay on her bed, simultaneously bored but having no desire to leave the confines of her room. She got up and turned her Ashley Simpson CD up as loud as possible; her brother hated it.
She imagined the strip tease she'd been planning to give Bret when she had him alone. She decided to practice it out of boredom.
Unlike her brother, Kim was fairly popular, though she knew it was largely due to the notorious size of her breasts. She'd been the first in her year to develop a womanly shape and, with a pair of D's, she was larger than just about all the girls who weren't obese.
She swirled her hips, awkwardly at first, but gaining the hang of the motion. She pulled up her shirt, teasing before discarding.
As she threw the shirt into the corner, she noticed something strange: it never reached the wall, but instead collided with something else, something she couldn't see.
As she peered into the corner, she thought she heard something like breathing... or perhaps a quiet growl.
Suddenly, her bra was cut in half and fell to the floor, Kim's breasts bouncing free of their captivity. Too stunned to scream, Kim stood dumbfoundedly as something sliced into her jeans and tore them to ribbons around her legs.
When her panties were similarly cut, she found her voice and screamed, but doubted she'd be heard over the music.
She ran for the door, but found herself picked up off the ground and tossed effortlessly onto her bed.
The air above her began to waver, slowly materializing into the terrifying demonic form of Yuriko. The demoness licked her muzzle with a long, forked tongue, claws clicking with anticipation. Kim looked in horror at the creature's groin, which was also licking its "lips" with a "tongue" dripping (drooling?) with fluid.
Yuriko pinned Kim's arms down as she descended upon her, rubbing her monstrous genitals against Kim's young sex. Yuriko's vagina-mouth made a hideous, slimy, popping sound as "kissed" Kim's cunt, tongue-labia probing her insides and clit with astounding speed and dexterity.
As horrified as she was, Kim was quickly overwhelmed by the nearly unbearable pleasure the demoness was inflicting upon her. Vaginal fluids flew sloppily and copiously over the bed as both orgasmed--Kim breathily, Yuriko with an unholy roar.
After the third orgasm, Kim felt something strange. Like her own cunt was "kissing" back. She could feel... even manipulate her clit now, for it had begun to enlarge and transform into a large, tongue-like organ. She entwined it around her lover's, now completely caught up in the act of this unholy love making.
Sharp fangs sprang from her labia and began to click against Yuriko's own as the two playfully nibbled with each other's twats. Kim hissed in pleasure, revealing sharp fangs.
Kim felt herself submitting to the darkness corrupting her flesh and mind. Images of primal lust and forbidden pleasures filled her thoughts.
Gray scales spread from her pussy, hardening muscle and flesh wherever they touched. Spikes and spines grew from her elbows and collar bone. A second, slightly smaller pair of breasts sprouted beneath her first while her original breasts firmed and filled with Yuriko's unholy fluids.
As large, brutal claws erupted from her toes and fingers, she dug them into her bed, tearing the fabric. Newly formed heel-spurs aided in her grip.
"Yessssss!" she hissed through fangs as a muscular tail extended from her spine. She cooed perversely as the scales covered her face, shedding her hair. Her button nose shrank into two nasal slits and the flesh around her neck became looser, forming a hood like a cobra's. Spikes grew from her brow line, above her now reptilian red eyes.
Finally, a pair of bat-like wings tore the bedding beneath her to shreds.
The snake-headed demoness that was once Kim orgasmed a final time, submitting completely to the corruption. She knew Jennifer was her queen and knew that she had plans to remake the world into her personal hell.
But more immediately, she had plans for Kim's brother, Kyle.