We're still in pre-alpha, so I'm still conceptualizing and building on certain aspects. Not every feature is implemented yet.
But my plan is for the corruption meter on each LI to not only trigger NTR events if precautions aren't made,
But also to open each LI to spicer fetishes with the player, i.e., sharing content and among other fetishes (But no scat scenes will be implemented btw).
I count harem as being in a relationship with various women, and they're like "Grr... Player-kun, you cheater! Now you have to fuck all 5 of us at the same time now and see who's better."
This I cannot promise to implement at all. Screw your way through the Astrum if you want, don't expect the other LI's to be happy about it though...