Oh I see your point-I don't think he's like mean-he's just like-kinda intimidating at first but then you realize he's actually really nice
But I do also have another one-
I was thinking succu/incubus x sweet/super innocent person-but we talking like-disney princess levels, birds fluttering around their head, flowers in their hair levels of innocence, which makes them like-the creme de la creme for succubi and incubi. So the demon lowkey has to like fight for them because of all the other demons. And it starts out with them just like wanting a good meal, but they end up actually falling for the person along the way