Show Kate the REAL meaning of rapture.

Her clothes fall off her in sodden clumps--Kate has been so inundated with demonic juices that it soaked through her clothes and is covering her skin, not to mention the amount in her hair that's turned her conservative bun into a strange sticky mess. It's actually quite impressive that she managed to keep from succumbing as long as she did. You're also rather impressed by the form those dowdy, now ruined clothes were hiding. "Well, Kate, you have one cute body," you say.

"Th-thank you," Kate mutters. She licks her lips and stares at you blankly for a moment. "I... I want..."

You cross your arms. "Yes, what do you want?"

"I want to sin," she spits out with a surprising vehemence. "I want to sin and fuck. I want to fuck and screw and fuck and fuck, fuck, fuck, fuck, FUCK..."

You realize that Kate is not going to get anymore coherent, so grab her forcefully and plunge your cock into her tight, virgin hole. Kate's taken enough of the Strain that any damage she might suffer from your oversized demonic member is healed instantly, her cunt adjusting immediately to the massive intruder. She groans in pleasure, climaxing almost immediately, and then begins bucking against you wildly. You fuck her savagely, brutally, and she takes it eagerly, any restraint not merely reduced but obliterated. She howls like a banshee as you cum in her, your jizz overflowing from her ruined pussy down her legs, and then you take her soul.

Kate Mars was not a living saint. She most assuredly proved that in the face of your demonic might. But she was a good girl, kind, selfless and a true believer. And you pull that delicious purity and faith and goodness into yourself, and send it to Hell as you destroy it utterly, leaving another depraved demon whore in the place of that good, kind girl. You watch as those dulled eyes come alight, sharpening into soulless red slits, as her skin darkens into a hellish red, as her body firms and her breast and ass expands. She shakes her head and that matted, ruined mousy brown bun comes loose and then her hair is a long, luxurious black mane. She hisses as her horns, wings and tail emerges, and then looks at you adoringly. You palm one massive breast, and see that her scar has not so much healed as changed--instead of a jagged cruciform, it is a smooth black mark, like a brand, shaped into the sigil of Lilith.

"Our Mistress has blessed you," you say.

"Mistress Lilith blesses us all," she answers back.

You hear the howls and cries of victory from your comrades. "Mmmm, that's my man," says Jess as she sidles out of the crowd to join you. "Persistent and cunning, you get what you want." She licks your cheek, and then glances at Kate. "I don't think we've been formally introduced, Kate. I'm Jess. Welcome to the winning side."

The naked lust for your slutty demon girlfriend in Kate's eyes looks like it could burn down a building. "Do you want to waste time talking, Jess," snarls Kate, "or do you want me to eat your dripping, filthy cunt?"

A moment later you are on the floor fucking Kate up her gloriously tight asshole, watching her full cheeks jiggle, while she eagerly licks at Jess's pussy.