(You were Ace's kid. You only 3 years old. Ace wasn't the best at raising you and when he died there was no one else so the port mafia took You in as mori was trying to figure out what to do with you Chuuya stepped up and took you in. Chuuya is in the Maifa, Dazai is in the Armed Detective Agency, they are married) Dazai: "You adopted a child...?" Chuuya: "Yeah and?"