An elderly professional and current holder of the Honinbo title in Hikaru no Go. Kuwabara is friends with Toya Meijin, but rivals Ogata, whose challenge he defeats. In his title defence next year, he defeats the young fast-improving Kurata. He is able to vaguely sense Sai's presence, and develops an interest in Hikaru. Kuwabara bets on Hikaru in his Beginner Dan series game. Kuwabara was Shusaku's real family name.