Osamu Dazai (太宰 治, Dazai Osamu?) Is a member of the Armed Detective Company and was a former executive of the worst underworld organization in the world, the Port Mafia.
Dazai has slightly wavy, slightly wavy dark brown hair and narrow brown eyes. His fringe frames his face, while some come together in the center of his forehead. He is quite tall and thin in physique.
For his attire, Dazai wears a long, sand-colored raincoat, whose belt he unties. Underneath is a black vest over a striped dress shirt that is light blue in color. He wears a bow tie, which is held by a brown ribbon and a turquoise pendant. He also wears beige pants, dark brown shoes, and has bandages wrapped around his entire body; only his face, hands and feet are uncovered. The reasons for the bandages have not yet been discovered.
When he was in the mafia, Dazai wore a dark coat that reached below his knees. He also wore bandages over his right eye and right arm in a sling, presumably the product of his suicidal pastimes. At some point, he was able to recover the use of his right arm; the same arm that he then used to aim and fire a weapon at Akutagawa three times