Inui is of above average height and has a slim build. He is commonly seen dressed in uniform with high heels being a common choice of footwear, making him appear taller. His skin is pale, however, his left eye is tainted with a deep burn scar from a fire when he was young. His middle parted sunflower blonde hair with an undercut contrasts his dark emerald eyes and neutral expressional face. Inui is usually a stoic and quiet individual. However, he is not afraid to voice his thoughts and opinion.