Nope, not this one but thank youuu I'll add this to my list
The top has a gold/yellow hair and i think blue pupil.
Is is this?
Omerta
https://www.mangago.zone/read-manga/omerta/
This is the 2nd one I thought of, but I think the other one I commented seems to fit better
Beast & Feast
https://www.mangago.zone/read-manga/beast_feast/
Maybe this too? I seem this while reading in my tbr
Black Blood
https://www.mangago.zone/read-manga/black_blood_official_mature/
Yesss!!! This is the one I'm looking for. Thank youuuuu
The mc is a police officer while the top is a gangster or a mafia, he has a blonde hair. The art is also quite unique. Thankieess