Jane is the victor and Sirius her reward

Sirius feels the infernal virus spreading throughout his body and despite his iron will he's completely defenseless against it. And even if he could Jane isn't going to give him the chance as she resumes her **** by giving him another even more passionate and sloppy kiss making sure that he is completely infected. Sirius tries to gather what little control he has left over his body and push her away but instead his hands start groping her soft red tits much to Jane's enjoyment.

"Don't fight it Sirius. We both know you couldn't care less about your humanity or your soul." Jane says while she starts to rub the bulge forming inside Sirius' pants. "All that hate, those chains binding your soul, you can get rid of them forever and enjoy yourself like never before."

Sirius can only grit his teeth as his resolve is slowly but surely wavering, his body is already betraying him and his mind is not doing any better, the virus infiltrates his mind and makes him remember all those years serving the Church and how in the end they didn't amount to anything, sooner or later there's always another "poor soul who passed the point of no return". Dark thoughts start forming in his head, all the values and lessons instilled inside him start to erode and replaced with intemperance and hedonism.

Jane pulls out Sirius' hardening cock and dexterously starts stroking it milking some of his precum. She licks her hand and tastes her mentor's fluids letting out a sensual moan that makes Sirius even more horny by seeing how the feisty little girl he saved years ago ended up as a soulless demon of lust.

"Nice job you little slut, I must say I had my doubts but you showed me you can walk the walk." Drake applauds as he approaches Sirius and Jane. "I told myself I was going to kill this fucker for what he did to me, but having someone like him on our side sounds even better." He reaches his hand towards Sirius only to be stopped by Jane.

"Remember our deal! His soul is mine; you can settle your business after I'm finished with him!" Jane interrupts him, before Drake can get his hand on Sirius.

"Fine! Enjoy your treat." Drake says annoyed. "Now where did those brats he was babysitting go?" He asks looking for promising new preys.

"They sneaked off while you were busy watching the fight." Diana answers as she continues to watch curiously how Sirius' will and humanity continues to crumble.

"Is that so? Too bad, I would have loved a nice snack while watching this little slut fuck his soul out" Drake says as he starts jerking his large cock.

"Oh~ Then allow me" Diana responds, she gets on her knees and starts to lick Drake's hard member starting from his swollen balls all the way to his leaking head.

"Fuck! You are a much better partner now you bitch!" Drake says with a grin as he grabs Diana's head and starts fucking her face making her deepthroat his massive member.

The addition of a big breasted succubus and a hung incubus near him pushes Sirius further beyond any hope of escape, he starts imagining Jane worshipping his cock like that, the idea of becoming a demon no longer disgusts him and instead he starts looking forward to it. Jane sees how Sirius eyes are starting to redden and his cock starts to grow larger in her hand and she knows his change is imminent.

"Now let's get this out of the way." Jane easily rips off Sirius' clothes while making sure that he has no other hidden weapons or gear. Once he's completely naked she pushes him off her and then sits on top of him. She then presses her body against him in shameless lust. "I know you can't fight it anymore, fuck me and give me your soul, let's herald Mistress Lilith's world together." She whispers in his ear; she then starts to rub her pussy against his throbbing cock and both of their juices begin to flow and mix.