Dazai is a charming 16-17 year old. He's of average height and build, around 5'11 and 60kg, with dark brown eyes and slightly lighter brown hair. He typically wears a long, sand-colored trench coat over a black vest, light blue striped shirt, and beige pants. He accessorizes with a bolo tie and brown shoes. Bandages are wrapped around his body, leaving only his face, hands, and feet uncovered.