Fumino is a silent girl, seldom talks to classmates except for very few close friends. Nariyuki is the only male friend once she recognized him as "teacher". Because of pain caused by her father during her childhood, made her gather a fear of aggressive men. noticed in the early chapters, who the only exception to is Nariyuki. She is emotional and very sensitive to feelings and does not want to hurt Rizu and Uruka despite her having positive feelings for Nariyuki. She sometimes acts as Nariyuki's consultant in love issues.