a young girl with long, dark hair that transitions to a fiery orange color at the ends, large pink eyes, and fair skin; she is often seen wearing a pale pink kimono with an asanoha pattern, signifying her status as a demon while still retaining a delicate, beautiful appearance; known for her strong will to protect humans, especially her brother Tanjiro, despite being a demon herself, and possesses a unique ability to manipulate her blood into flames that harm only demons.