Yakou is a man with rather pale skin and dark blue eyes, with irises designed to look like two squares with one inside the other. His hair is short and wavy, only reaching just below the ears, and is dark blue, like his eyes. He sports black round glasses and is usually seen with a cigarette in his mouth. He also has a little stubble on his chin. For clothing, Yakou wears a white button-up shirt, over which he wears a beige blazer. On his chest is a tattoo of a blue eye, only partly revealed.