Responses
They're genuinely insane
https://www.mangago.zone/read-manga/black_mirror/
This one is an oldie but a goldie, bottom is a crazy gangster, top is a cop that seems normal but he's just as bad
https://www.mangago.zone/read-manga/honto_yajuu/
These two can be considered crazy, but they're mostly just dumb
https://www.mangago.zone/read-manga/kill_me_if_you_can/
Crazy mc and ml