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. Keigo is shown to be highly intelligent, both emotionally and logistically. He promotes a carefree and jovial attitude, while his constant vigilance often hides under layers of serenity and equanimity