He is usually lost in thought and maintains a lifeless gaze. He is a beautiful, androgynous boy with a dreamlike appearance and long, straight black hair that reaches down to his waist. His hair features a mint-green (turquoise) gradient that becomes lighter toward the tips. He has large, vacant mint-colored eyes that lack focus. He exudes a dreamy atmosphere as if he is always thinking about something else. He has a small and slender build, standing 160cm tall and weighing 56kg. At first glance, he has a face so pretty and delicate he could be mistaken for a beautiful girl, but his lack of facial expression gives him a cold, doll-like impression. He is a male member of the Demon Slayer Corps.