Honestly we all need a lil bit of morally grey characters for them to be actuually interesting amiright.
Mafia / crime list. I mean top kinda HAS to be a lil bit (or just a) of a red flag to be in that job:
https://www.mangago.zone/home/mangalist/2448175/
he's on edge. This list is basically the protagonist being tormented by both their life situation and love interest, and before you go, YES, these guys are red flags, but all of them have redemption arcs if it help:
https://www.mangago.zone/home/mangalist/2452007/
If you haven't read it yet,,
https://www.mangago.zone/read-manga/the_beast_must_die/
as much as i like my wholesome BL's sometimes i get bored, so any recs where the seme's red flags are just a lillll bit red, just like a little bit