Continue teasing her while you reveal just how much you know

You smack your cock against her wet slit again, her head jolts, but she doesn't break eye contact. You continue to slowly rub your cock against her sopping pussy lips, coating your shaft in her juices.

"I know the source of your power, I was able to find a text you weren't able to sanitize or corrupt."

"Or so you hope." she says dryly.

You mash the head of your cock against her clit, and she bites lip as her expression tightens slightly, and she lets out a quiet whimper.

You continue, "Where a normal human woman has a womb, your kind have a demonic core. It feeds on the essence of men, using the powerful sympathetic link between a man and his seed to directly drain his energy. I understand that the feeling of semen seeping slowly into your core is actually far more pleasurable for you than the actual act of sex."

She raises an eyebrow, "Ok, maybe you're right, maybe not, but what does it really matter. Succubi survive on cum, that's what you uncovered? You are a true scholar." She follows with a brief chuckle, then grinds her hips against you, rubbing your cock, coating it with even more of her fluids.

You take a deep breath and keep going, "It's also your greatest weakness. If I perform the same ritual that transformed you into a succubus again, your cervix will open up for me, giving me direct access to your demonic core."

"Good luck, lover." she rolls her eyes and gives you a half smile. "That ritual is usually performed by an incubus, not some human man with a weak human cock. You'd never survive the entire rite."

You brush off her comment, pressing the tip of your cock to her entrance, moving in small circles, stimulating her entrance, making her moan and gush a little more onto your cock.

"Once exposed, all I have to do is flood your core with all of the cum I will inevitably have saved up during the ritual. Your core usually feeds slowly, a drop at a time, consuming each load slowly to sustain you long after you've drawn it from your victim. If it were soaking in a large pool of cum all at once, the orgasmic pleasure that you would experience would be so powerful, so overwhelming, that it would melt down your will and consume you with an unending desire to submit to and serve the source of that experience. You would be enslaved to me for the rest of my life, after which you would be free again, but perhaps forever changed.

A brief flash of concern flits across Kavita's face, but is quickly replaced by a malicious grin, followed by sudden laughter.

She stops laughing as suddenly as she started, and looks you coldly in the face, "Educated men always think they can research their way out of a problem. You think just because some old book looked impressive to you, that it must contain the truth. The lies and myths we have seeded into the world about our kind are ancient and pervade every corner of the world. Give your idiotic plan a try, you'll soon find out just how misplaced your faith in this book is."

"Perhaps."