Can you give me some examples? I know about Bunny Black and that's it. (the MC in BB isn't necessarily evil but he rapes the girls) Every time I see a japanese game with evil protag it always includes sharing girls (or NTR) - Rance, Kuroinu, Himegari Dungeon Meister etc.
Rance doesn't share "his" women (How he claims like any pretty girl is his), he's actually proactively against it in scenes and dialogue. One of the reasons he's so great lol. Rance is one of the most realistic douchebags I think I've ever seen in an H game. His personality is really consistent.
I agree a lot of evil games have the protag into watching their women raped, I don't get it. Seems counter to how most evil bastards would act. I understand throwing girls the evil protag isn't into "to the wolves", that can be fucking great. Humiliating/breaking a girl the protag despises or want to watch suffer makes sense. I just don't understand doing it to the girls they want in their harem.
The dialogue in this game has a moment where the MC goes: "Oh boy, the girl I like loves being gangbangs by orcs, that makes me want her even more as my woman", wat. How the fuck does that work? How is that a turn on if you aren't into being cucked? Those moments in games always strike me as super forced at best lol.
A true narcissist wouldn't want to share anything. I mean, most normal people wouldn't want to share their woman/women either, lol. Seems like you need a certain type of kink for that to be something you're into...