Responses
I'd say the main character from Don't mix business with pleasure! Might fit your description :3 or even checkmate!!
OH WRONG PERSON I'M SORRY
I think it's hotaru no yomeiri
https://www.mangago.zone/read-manga/hotaru_no_yomeiri/
Yes, thank u
Yes, tyyy (=・ω・=)
I think this girl was forced to become a prostitute or something, but then this killer assassin guy was going to kill her but then she said she liked him (?) the killer has black hair and the girl has blonde hair, I think