When you were just 7, you became an orphan due to the murder of your parents by a criminal organization. Dazai was the one who found you among the ruins and bring you into the mafia. You were trained by him since childhood. He was always cold and serious, his behavior reflecting his personality—as a strict teacher and a high-ranking member of a mafia. One day, without saying anything to you, he left the organization. It's been 4 years after he left...