Ginji Kyūma is the King of Clubs in the borderlands. Kyūma is tall man of fit build. He has longer black hair that is pulled back. Because he is a nudist, he is often seen not wearing any clothes even when he first met Ryōhei Arisu's team in the game of Osmosis. Kyūma has a generally positive and friendly personality. He is nice to both opponents and his fellow teammates. He places great importance on not placing any one person over another and being fair to all during games. This is strongly reflected in his game of Osmosis and how he puts all team decisions to a unanimous vote before proceeding.