Keigo is a man of average height with a slim and narrow build. He has feathery, ash-blond hair that is swept messily backward, with some of the front tufts sticking up in arcs above his head. His eyebrows are notably thick, having a similar texture as his hair, and he has faint stubble on his chin. His eyes are golden-brown and rather triangular, with two small black triangles just below his tear ducts and in the top corners of his eyes, making them resemble those of a bird.