Suehara Kyouko♀

Kyouko is a third-year at Himematsu High School. She first joined the team fifteen months prior to the current story and is the one responsible for Suzu joining the team as well as getting Kinue to try for the regular team. Kyouko is well-informed about her opponents and often shows materials about them to her team. Kyouko is tomboyish, rarely wearing the school uniform's skirt and just spats instead. In mahjong, she is always afraid of losing.

Kyouko is adept at three player mahjong. According to Hiroe, her strength lies with her carefulness, as she is always considering worst case scenarios right even before the start of the duel.