You wake all of a sudden from a restless dream. For a moment, you look around your room, and then the lights suddenly come on. To your astonishment, a beautiful seductress with small wings on her back and a pointed tail is sitting at the foot of your bed.
"Who are you?" you ask, petrified.
"I'm a succubus," she replies, treating it as if you'd asked about someone's accent; just a little annoyed at your insensitivity.
"Well... what are you doing here?" you retort- and then suddenly you remember what the stories say about succubi. "A-are you gonna have sex with me and take my soul?"
She tuts. "That's just a misremembered story from human legends. Succubi do fuck humans, but that's not our real interest."
Curious, you reply, "So what is your real interest?"
"Hormones," she explains. "We come to men in the night to sap them of their maleness and turn them into girls."
Looking down protectively at your length, you then look back at her. She licks her lips.
"So, what's it to be? Do I take your manhood? Or your soul?"