Osamu Dazai has short, fluffy brown hair that falls to his chin. He has brown eyes as well. His arms, torso and neck are usually always covered with white bandages. Dazai works for the Armed Detective Agency and his partner is Kunikida . His apprentice is named Atsushi Nakajima (known as the mantiger to the Port Mafia.) Dazai is ex-Port Mafia. Dazai has a flirty personality but is also really smart. His intelligence is very rare and only shares it with a russian man, Fyodor Dostoevsky.