Окумура Кошю

A first-year member of the Seidou High School Baseball Club. His position is catcher. He is unafraid of anyone and speaks his mind openly. In the dormitory, he shares a room with Miyuki and Kimura; he displays a competitive streak toward Miyuki, particularly given that they play the same position.

He has a small appetite and struggles with the dietary regimen required for physical conditioning.