Shiori Nakagawa

Shiori Nakagawa (中川 しおり Nakagawa Shiori) is a girl in her first year of middle school and the substitute mother of Rai. She is quite outspoken and to begin with didn't get on well with the other parents. At one point she considered abandoning Rai but after an intervention by Honoka Sawada she became more approachable.

Trivia

 * Shiori's surname Nakagawa means "middle" (中) (naka) and "river, stream" (川) (gawa).