An inspector in the First Investigation Division of the Kanagawa Prefectural Police Headquarters. He is the identical twin brother of Sango Yokomizo. Except for his hair, he looks exactly like his brother. He dislikes sweets. He possesses exceptional physical abilities. He is 35 years old. With his sharp eyes and rough way of speaking, he might look like a thug at first glance, but he is actually a tsundere detective with a deep heart and a strong sense of justice. Once he starts something, he sees it through to the end.