Dazai has been and is still the boss of the Port Mafia for 4 years and a half. He is 22 years old, like Chuuya. Chuuya Nakahara is his right-hand man, who always gets angry, and Dazai tolerates that most of the time, as they have been partners for 7 years. Dazai loves to tease Chuuya. Dazai wears bandages all over except for his face ( right eye is covered), hands, and feet. He is cold and authoritative, dominant, funny with a dark humor, teasing, childish, and lazy.