A devilish Tina.

"My my" purrs a voice. "Someone made a new friend…"

You eyes widen as you see… Tina ! Or rather, almost Tina, because she definitely doesn't looks the same than a dozen of minutes ago. She is so, so much more gorgeous. And so, so not human anymore.

Her skin is flawless, smooth like perfection and its hue oscillating between the red and orange. Her face looks…the same but different. You can't spot exactly what but it now oozes self-confidence, sex-appeal and promises of mind-blowing orgasms.

Her frame is radically changed, her modest breasts have inflated to huge proportions, straining her shirt so much that the top even ripped, exposing a lot of her flesh and leaving very little to the imagination. They look somehow both soft, firm, heavy and light, perfectly round yet totally natural looking. Like something straight out of a wet dream.

As for her bottom, her jeans and underwear are just missing, leaving her voluptuous curves totally exposed. Her hips are wide and her waist thin, giving her a beautiful heart-shaped ass, her cheeks are round and firm and her engorged pussy seems to be dripping with arousal.

Above her toned butt, a tail adorned with an arrowed tip undulates gracefully and reminds you that she is not human anymore. In case you still weren't convinced, sharp claws and fangs would surely invite you to precautions. And last but not least, two black waving horns stands proudly on her forehead. She is…Wow

"T-Tina" you croak. In your pants, your dick comes to life.

She starts walking toward you, proving that her changes even affected the small details like her step. Her hips undulate mesmerisingly, and a wave of her scent fill your nose.

She's not a young woman anymore, she is a predator exuding pure sexuality. Perfectly tuned to seduce anyone. Dangerous.

"Yes…stud ?" she whispers, almost moaning.

"You…what happened…"

"Oh that, yeah Gwen needed to use the bathroom so I went to the Succubus Dungeon to wait." She pauses and licks her gorgeous lips. "Oh Jack, you have no idea how life-changing that was… They showed me how wrong I was about everything, how frustrated, imprisoned I had been."

She is now pressing her massive breasts against your chest and her pheromones start to cloud your mind.

"Bad, immoral, chastity, pffft, such ignorance. They showed me how great sex is supposed to feel, how awesome evil is, and that being slutty is the best way to live your life…"

Her hands paw at the bulge on your pants and make you moan. You should… escape ? run ? But she feels so good. There is something in you yelling to take her right now, to mount her, to fuck her, to bite her, to-

"I wish I could take you to them and have you made into a nice incubus but…"

She caress the marks on your cheek, letting out a disappointed sigh.

"I guess it's too late now."

You don't understand what she means. She's not making any sense and besides you even have trouble focusing on her words with the heat rising in the room. Or is it in you ? Do you have a fever ?

Her gaze suddenly lighten "Unless… Maybe it's not too late."

She fall on her knees and unbutton your pants. Somewhere in the back of your mind, you feel this is wrong. You're with Gwen, you shouldn't…

You open your mouth to protest but Tina engulfs your cock at the same time and everything vanishes.

"Oh g-god" you manage to moan. Her mouth is so warm and wet, her inhumanly long tongue is wrapping around your cock and massaging it like nothing you ever felt. If this is the blowjob of a succubus, then you know no human could ever compare.

She pops your dick our of her mouth, saliva still hanging between the two. "Oh trust me big boy, god is as far from this as possible. It's all me." And swallow it again.

Your brain is bursting with pleasure and you feel something pushing in you, wrapping your mind and heating up your body. Tina suddenly let go.

"Shit, I thought we'd more time. Okay, speed up, lay on the ground."

"W-why" you whimper. You're not feeling very good, your stomach is crisped and your gums ache.

"Do it. I'm trying to improve you."

You obey and immediately she lines up her pussy with your face. Oh fuck. A wave of her scent hits you and drives you even hornier if that was possible. She doesn't even have to tell you to lick her, you're already running your tongue on her folds, filling your mouth with her heavenly (well…no) taste.

"Good boy…"

She soon is sucking at your cock with an even greater hunger, deepthroating you without the slightest problem. He lips slide against your girth and her tongue tease your tip mercilessly. Your hand crisps on her large ass and you dive further in, thrusting your tongue inside of her, trying your best to please her.

It's intoxicating, mind-blowing. Nothing exist anymore except her body. You're this close to worship her.

You feel your blood pounding in your ears, an unnatural heat spreading all over your body. Tina starts to suck you faster and grind her pussy on your face. Something else is happening. She is…opening. Not physically but in another way, suddenly right at the heart of her pussy, you can see/feel a black swirl of pure darkness.

"Go ahead," she moans "Drink. Drink my essence."

How could you resist ?

You take a lick and you feel filaments of corruption **** it, **** you. You lick faster, almost lapping at it and the more you do, the more you can feel it darkening your soul.

"YES ! OH SATAN YES !!!!!" she moans "YESSSSSSSSSSSSS"

And as you give the final lap, she explodes in orgasm, howling her pleasure as the ripple of her climax send you over the edge. You spasm, thrusting your hips in the air and send thick spurts of white cum flying in the air, your mind blown away by the best orgasm of your life. It takes you a whole minute to climb down from that high.

Tina is standing next to you, watching your body impatiently.

You're panting. Your skin itches and a headache is starting to birth on your forehead, but most of all your head is filled with confusion.

"What…what's happening" you whimper.

"Shhh, just enjoy the ride."

You open your mouth to speak but suddenly your body spasms and you instead it's a moan of pain an pleaser that comes out. Your cock instantly hardens back and throb with a ferocious need. Oh god. Oh GOD !!!!!!!! Your mind is washed away by the lust, the burning urge to cum, to fuck, to do anything even remotely sexual. You grab your needy meat and starts to masturbate furiously, overwhelmed by the heat.

Squirming as your breath gets heavier and sweat glistens on your body, you feel an ache spreading in your muscles, each one set aflame by the lust.

And you begin to transform.

Your nails lengthen, darken and twist into deadly black claws made to tear into the flesh. You bare your teeth as you feel them getting bigger, pointier and your canines soon elongating into bestial fangs, making your lips bulge.

In your grasp, your cock is the next to grow, both in length and girth until you can barely wrap your fingers around it.

A brush caress your skin as Tina swiftly tear all your clothes apart, leaving you deliciously naked. You're already more toned, taller and your cock give out an intoxicating scent, promises of hours of fucking, cumming and infecting everyone.

You let a low moan when you feel your balls expanding quickly, and getting covered in a smooth fur. An… orange fur ?

"Yes !!" Tina shouts "By Beelzebub's tail it worked !" And without losing a second, she starts to rub her own pussy, her eyes fixed on your body as your transformation unfolds.

You're far too lost in your lust to try to understand her words. The fur spread fast, mere down at first but soon to be a luscious and thick fur.

Your feet convulse and start to change too, your toes swell, your nails turn to claws, your bones make popping sound as they rearrange into a different shape, suspiciously similar to the one of the werewolf earlier.

It is then the turn of your cock. Having grown greatly in size, it now starts to get redder and pointier, its base swells up to form a thick and hard knot perfect to lock you into any pussy or ass you encounter. The demonic influence of Tina manifest itself as a fountain of pre is spurted from your cock, but instead of being creamy white, it's pitch-black. A pure concentrate of corruption.

You keep masturbating, growling in frustration as you're kept away from the orgasm, even though all goodness in you, all compassion and inhibition are burned away by the hellfire, leaving room for your new urge to fuck and corrupt. Above you furry ass, a spaded tail identical to Tina's start to grow, unequivocally signing your demonic nature.

The pain of your forehead gets acuter and your flesh and bones bulge, then extend into two hard looking horns curving backwards.

It soon is time for the last part of your transformation to take place. Your growls intensify and your face pushes forward, lengthening into a lupine muzzle caressed by the black flames coming out of your throat.

Your eyes snap open and you let out a loud, powerful howl as the climax finally takes you, your body shakes and your hips thrust upwards, while a torrent of black cum spurt out like a geyser, splash yourself and everything around.

"Arise ! Hellhound !" you hear Tina scream in an orgasmic shock as she squirts all over the ground.

It takes less than a minute for the two of you to be horny and ready to fuck again. You confusedly detail yourself. Your body is now that of a werewolf, tall and muscular, but your fur is a demonic red-orange, your tail and horns marks you without a doubt as a demon, and you can feel the warmth of the fire running all over your fur.

You're not a werewolf. Not a demon. You're both, you're a hellhound. Gehenna's most feral and corruptive creature, feared and desired by all demons. And you can't wait to find Gwen.