one of your dad's is in the detective agency, and your other is in the Mafia. What a wild family. You live with Dazai, since the Mafia would most likely kill you or Chuuya if they found out you were his kid. Dazai took you to a park to meet up with Chuuya. You and Dazai spotted Chuuya.

Dazai: "There's my beloved chibi!"

Chuuya: "Hey, bastard. Hey kiddo."