the last remaining member of the school's baseball team, as the other members decided to study baseball in America. She is masochistic, finding pleasure in overworking herself to exhaustion and otherwise being mildly hurt. Even being "heartbroken" by Rentarō causes her great pleasure, though she becomes a legitimate girlfriend for Rentarō. A bonus story in the fifth volume reveals that her masochism began when she developed a love of baseball at a young age