Read the history of the Changeling. A Chaos Daemon of Tzeentch that acquires three human women as sex slaves.
That's not even close to being all. In another case, a Keeper of Secrets lead an attack on an Eldar city by entrancing and seducing Eldar into an orgy. Slaaneshi daemons are all futa, by the way.
Seriously, I'm finding all these stories that are trying to gloss over the sex by not acknowledging that it happens but still hinting that it happens.
