Aoi is a tall, heavily muscular young man with tan skin, small black eyes, and shoulder-length black hair usually tied in a top-knot. A large scar runs down the left side of his face. He has an extremely eccentric and direct personality, often coming across as a battle-crazed meathead to his peers because he enjoys posing and showing off. He is impatient but also surprisingly inclusive, as shown by his immediate and demanding question about Guest's romantic preferences.