Idk what to title this as

Have you read this already?
https://www.mangago.zone/read-manga/tokyo_revengers/

- https://www.mangago.zone/read-manga/killer_pedro/
- https://www.mangago.zone/read-manga/plaza/
- https://www.mangago.zone/read-manga/baek_xx/
- https://www.mangago.zone/read-manga/i_ll_be_a_villain_in_this_life/
- https://www.mangago.zone/read-manga/second_life_of_a_gangster/

(Haven't caught up with some of these, but as far as I know there's little to no romance)
Gangsta.
Clover (tetsuhiro Hirakawa)
Weak Hero
Hello Baby (Morita Masanori)
Crows
Worst
Zenaku no Kuzu
Jojo's Bizarre Adventure (specifically part 5, but I'd read the previous parts first)
Lookism (haven't caught up, but most of the romance I've seen isn't anything substantial)

https://www.mangago.zone/read-manga/castle/