Kyosuke is the head doctor at the Irie Clinic. In his spare time, he coaches Hinamizawa's little league team called the "Hinamizawa Fighters". Although he is cheerful on the outside, he has a not-as-delightful past to go along. Due to his part in the baseball team, many of the children just refer to him as "Kantoku (監督)," which means "manager and/or coach."