chuuya's parents sold him off to the Mafia, since they had Depts. He grew up there, but when he turned 18 he was forced to marry Dazai Osamu. He comes form an Wealthy family, but his parents didn't wanted to wait any longer and wanted him to get married. So they where forced too, since his parents are also involved in the mafia they got a deal. But they hated each other and had not to „love" each other. Well this doesn't work well and they fight constantly, every day