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. On most occasions, Dazai is overly dramatic. Dazai likes to tease anyone and everyone, especially if it means that he can get a laugh out of it. Often attempts for laughs, but always fails. He has only a few months to live, but keeps it a secret to avoid vulnerability. 