Kelly, of course.

Kelly arrives in pratically nothing. She is wearing a tight white shirt, no bra and jet black short shorts, hugging her ass as if they were painted on. You shift into your former human state and answer the door. "Hey Kelly. You look hot."

"Not so bad yourself." And with that Kelly lunges at you and kisses you hard. You fall back onto the stairs and feel your demon cock grow under the human clothes. "Hmm, that feels bigger. I like them big." She rips off her shirt and then your pants revealing a large, thick cock for her to suck and fuck. She licks expertly around the tip of it and then presses her mouth around it, just, and sucks lightly.

It isn't long until your demon shape takes over and your phallic tail moves down her back. She is shocked and looks up. She sees your new demon face and is taken back. "Come on Kelly. You'll be a great demon slut. You feel so more horny as a demon." Kelly is unsure. You rip off her hotpants and she is exposed. The heat coming from her pussy is intense and you can see her submitting.

Kelly moves over you and sits on your stomach. "Fuck me demon. Make me a Lilith slut." You move your prey onto your cock hard. She screams, half from shock, half from pleasure. You can feel her becoming increasingly hot and wet and fuck her fast. "Oh yeah, fuck me with your... ooh fuck yeah!" She continues to swear and curse as you produce pre-cum into her pussy, converting her already. You notice her skin darken and her breasts largen.

Before long, you have injected a lot of cum into her pussy and Kelly the human slut is now becoming a succubus. Wings grow from her muscular back and her skin has a crimson colour. Her face becomes more of the common succubus shape and she screams wildly, this time out of sheer pleasure. She laughs and rides you faster and harder than Jess ever did.

Kelly was too easy. The next target needs to be more of a challenge. Kelly continues to suck on your cock as you think who next.