Agree

"Fine," you say. "I'm in."

"Perfect," Lilith purrs.

Lilith slides her hand up your bare chest as you gasp in the mixture of pain and pleasure her touch brings.

"I've been trapped in there for some time. I could use a little... pick-me-up," Lilith says.

"What fuels you, exactly? You want blood, right? Or souls?"

"You're not very familiar with demonology, are you?" Lilith smirks. "Succubus. My magic is, for the most part, fueled by sex."

"Oh," you say, taken aback. "Well, that I can do."

"I can tell," Lilith smirks, looking down at your erect member. "Almost all forms of sexual activity satisfy my lust for power. I think as a gesture of good will to celebrate our new arrangement, I'll let you pick what's going to happen next."