Ma-kun (s2e10)
Wait, why am i only seeing one person brought up about ma-kun saying "this girl is not gonna shape up unless someone teaches her a lesson" 「あの不良女1回教えてやらなきゃぁ分かんねぇな」 is scary and nails the coffin its a no go wtf. Even as a joke that's definitely- a questionable thing to say. He has said so many questionable things like "i'm much more mature than you" to assun. Or being the root problem that lead to maririn getting ganged up, he didn't even apologise either. Terribly immature expecting everyone else to grow up but himself.
Also i didn't even remember ma-kun has a child and he never mentioned or tried to discuss with assun on how her alcohol problem might affect his child etc. I hope they break up and assun finds a better guy. That guy barely showed any good sides to him and only showed red flags upon red flags.....