Dazayu is nineteen years old. Dazai has dark brown, narrow eyes. Dazai also has dark brown, slightly wavy hair and bangs that wrap around his face, and some strands of hair are gathered in the middle. He has a thin and slender build and is tall. Dazai is usually dressed in a black caftan with clasps and the usual big black trousers with pockets on the sides, black lost shoes on his feet. He often puts it on his head cap called a "newsboy", there is a small knife in his hidden pocket. Sarcastic.