A new demon weapon is born

"You...fucking...demon!" The virus flowing through Sirius' body has stripped him of any capacity to form rational thoughts, he can't even remember all the years he spent taking care of Jane, training her and even though he never said it out loud, how he sometimes even thought of her as his daughter. Yet the only thing in his mind now is how good his hardening cock feels, how hot is Jane's pussy and how much he wants to fuck her.

Seeing her former master writhing under her makes Jane's arousal surge even more, for years she respected Sirius as her hero, her mentor and even her father, yet all those feelings have been diabolically twisted and now she only sees him as her target to transform into another soulless sex demon.

Sirius watches as Jane slowly lowers her hips and his cock is ingulfed in her walls. "You're not even a complete demon yet and your cock is so big already!" Jane lets out a chuckle and her pussy squeezes Sirius with all her might.

"Soo...tight..." The pressure feels so good that if it weren't for the virus holding his orgasm back Sirius might have just cum the moment Jane took his cock. Her hips finally come all the way down and he feels an intense wave of pleasure through his cock.

"I can't wait anymore!" She starts moving her hips and bounces up and down on top of him. She starts moaning, savoring every sensation of his cock as she pounds her hips against him in lust. With every thrust her large breasts bounce in front of Sirius.

"You fucking demon slut!" Unable to hold himself back anymore Sirius thrusts as hard as he can into her making Jane let out a long shriek of pleasure.

"That's it! Fuck me! Give your soul to Lilith!" Jane encourages Sirius who continues thrusting her once again. Her pussy squeezing around him on every thrust.

"Look at them go! Looks like they both really wanted this" Drake comments as he enjoys the depravity Sirius and Jane sink into. Diana stops sucking his cock and turns around to watch the rutting couple. "Hahaha! You go girl! Keep riding that stud!" She cheers for Jane while stroking Drake's leaking cock.

"Sirius! I can feel it! You're so close! Give it to me!" Jane starts grinding her hips against Sirius and he can feel his desire swelling up and tensing inside him, he grunts and slams his cock as deep as he can before practically exploding inside her.

"Ahhh! I wanted this so badly!" Jane feeds on his soul and squirts on top of him as she sends it to hell and her pleasure just escalates further as she feels Sirius cock enlarge even more and he starts spurting black cum inside her.

Intense pleasure flows through every inch of Sirius body, starting from his thickening cock and spreading all over him. His body grows in height and is filled with infernal strength, his muscles bulge and expand matching those of Drake and two black horns, a pair of dark bat wings and cock-tipped tail emerge from his body.

Just as Sirius climax starts to subdue his surroundings shift and he finds himself somewhere else. It looks like a large underground cave illuminated by rivers of lava and bright red flames coming out of the floor and the walls and in the center of the cave. Above stairs made out of black stone and sitting on a opulent throne there is a beautiful succubus, no, Sirius instinctually knows who she is, she is the cause of all this and his new Mistress, Lilith. He kneels in front of the stairs leading to her throne and lowers his head.

Lilith gives him a smug smile and walks down the stairs until she is in front of him. "Sirius Kane! I always knew your soul was going to be mine sooner or later, but this, this a welcome surprise."

Her voice overflows with sexuality, just being near her fuels Sirius lust to primal, uncontrollable levels yet he remains on his knee although his red, leaking demonic cock shows just how excited he really is.

"You were once one of humanity's greatest weapons against me and my kind, but look at you now. So strong, powerful, evil!" Lilith starts walking around him, as if she is a predator circling around her prey but also an artisan watching proudly her newest piece of art.

"Now you'll be an instrument of my will, and help me spread my gift to the whole world!" Lilith grandiosely declares while standing in front of him.

"I'm at your service Mistress." Responds Sirius bowing his head. Then with a single hand motion Lilith makes Sirius stand up, she can see in his red, slitted eyes nothing but complete devotion and adoration towards his new Mistress and she doesn't try to hide her excitement from acquiring a new powerful champion for her cause.

"Good, as for your first mission, all I need is to finish your job, to give my blessing to the Dryer girl and return her to her family. They will be important pieces for my future plans." Instructs Lilith as she slowly starts to grind her soft, curvy figure against Sirius' musclebound body.

"As you command." Says Sirius, by now the allure of Lilith's body was too much for him to resist and his hands are eagerly exploring her gloriously sexy body grabbing her perfect ass and soft breasts much to her pleasure. Lilith then grabs his head and gives him a passionate kiss, empowering Sirius even more, dark, forbidden knowledge pours inside his head and his already large muscles bulge even more along with his cock.

"Now go Sirius, oh but don't forget to enjoy yourself while you're at it. It would be a shame to waste your new gifts after all." Lilith playfully waves at him and Sirius' surroundings shift once more and he sees Jane still bouncing on top of him with an orgasmic look in her face.