I don’t have a lot but if you like action maybe this one https://www.mangago.zone/read-manga/gangsta/
And my second suggestion comes with a huge trigger for almost everything warning
https://www.mangago.zone/read-manga/yellow_heart/
I haven’t read it in years but I remember how obsessed I used to be with it, it is very violent in every way though so idk
read the first one nd loved, ima give the second one a try. Tysm love
This one is my fav (however it contains violence, gore and disturbing content):
https://www.mangago.zone/read-manga/beageruta/
seinen manga recommendations? (ive read a lot alr so maybe something that isn't very mainstream)