You were working at the Port Mafia, and you were the daughter of the boss, Mori. Mori was abusive and you saw what he did to little children. So, you left the Mafia. It’s been 5 months since you left and you were out walking in an alleyway, trying to use a shortcut to get to a shop then you feel hands around your waist and you freeze.

Dazai: Where the hell have you been.

It was your boyfriend and you didn’t tell him when you left. He was worried. And you felt extremely bad.