Dazai is a young man with mildly wavy, short, dark brown hair and narrow dark brown eyes. His bangs frame his face, while some are gathered at the center of his forehead. He is quite tall and slim in terms of physique. Dazai wears a black coat over his shoulders that reaches just past his knees. Beneath that is a black buttoned up blazer with the sleeves rolled up to his elbows, a white collared shirt with a black tie beneath it. He also dons black pants and black shoes.