Okey but...is he the mastermind behind a yakuza gang or smt? He probably said things he witnesed or felt...the mom did what she did.
As for the feelings, everyone has a selfish side like that, you have to control it and face that side of yourself. He has to talk more so we understand how dark was his feelings, but to me, so far, it wasnt that bad. He was a teenage back then, and dear g**, me on my period during my teenhood...l could kill people! (Thanks to my parents I didnt)
everyone saying this was bad communication but he was extremely clear with his feelings. he said ...

I'm so proud of youuuuuuuuuuuuuuu