Kaigaku is a muscular young man of average height who has short, spiky black hair, with two thick strands framing his face, and a pair of cold turquoise eyes framed by thick, arched eyebrows. He has an unfriendly face, that is always set in a semi-permanent snarl. He has many demonic traits like four black flame-like markings on both sides of his cheeks, elongated canines that resemble fangs, sickly pale skin, sharp blackened nails, and pointed ears.