Talk:Demon/@comment-30440023-20161108002409/@comment-24026095-20161112154200

Succubi used to drain men of all energy with sex and kill them (usually). Now they've just become extremely lustful and KO men with lots of sex, and change them into incubi. Incubi were also malevolent demons who preyed on human women (among others); now they're just ideal mates for monster girls who can fuck for eternity.

So it follows that demons will be sexually malicious. Maybe they enjoy BDSM or breath-play and will force you to put up with it until you enjoy it. Maybe they'll tease you for a week and deny you release until you give them a thousand orgasms. Or they'll just ride you until dawn when you pass out however much you beg them to stop because you've got work, or perhaps a human girlfriend.