Heres a angsty idea for why Chu may hate dazai. So in the book it was noted on how much of a asshole he is So if chu & dazai had a friendship before this & then after mori dies Dazai becomes mafia leader & makes chu his executive. So in this au, Dazai looses all he was. Even his good parts. So if Chu was to watch this happen to dazai, it’s natural to feel like youve been left because the dazai he cared for left & this boss he hates is there & he has to protect him and dazai finds it fun to watch

Hmm, that’s good angst content for sure~ :3c