Shiho at first glance seems to be a quiet and reserved girl who rarely talks to anyone and doesn't smile much. In fact, the only person she lights up around at school is Ann. She lacks confidence to a significant degree, thinking her volleyball skills are her only valuable attributes. However, it is said that she used to be an outgoing and sociable person until she received a series of advances, as well as abuse, from Kamoshida at Shujin Academy. In actuality, Shiho is an extremely stressed and burdened teenager for various reasons, mostly school-related. During the game, it is heavily implied that she was raped by Kamoshida as a "consequence" for her friend Ann's rejection of his sexual advances, and this is the "final straw" that causes her to attempt suicide. Ann later calls Shiho an "idiot" out of lamentation for how Shiho allowed herself to be manipulated and driven to commit suicide.