Nihon Sumo Kyokai
The Japan Sumo Association (Nihon Sumo Kyokai) is the “Official” web site for Sumo information.
Source: “Nihon Sumo Kyokai” | Subject: Sports
The Japan Sumo Association (Nihon Sumo Kyokai) is the “Official” web site for Sumo information.
Source: “Nihon Sumo Kyokai” | Subject: Sports