S0E3 · Apr 4, 1991 · 80 min

Ayako (Yasuko Sawaguchi) has come to her alma mater, an elementary school, for her teaching practice. There is something she wants to confirm. She remembers locking a boy in shorts with no face in a school room and leaving him there when she was in elementary school. The place where that room used to be is now blocked off with a wall. Just then, while Ayako is on night duty, the phone, which was supposed to be broken, rings. When Ayako picks up the receiver, she hears a boy's voice saying, "Open up..."