On the last day of the school term, middle school teacher Yuko Moriguchi calmly announces to her students that her four-year-old daughter was murdered—by two of the very students sitting before her. She has already taken her revenge: their lunch milk was laced with HIV-infected blood. As shock ripples through the classroom, the truth slowly unfolds through a series of chilling confessions—from the teacher, the accused students, their mothers, and witnesses. Each voice reveals a different fragment of the tragedy, exposing twisted motives, lonely childhoods, and the fragile boundary between innocence and evil. A gripping psychological thriller about grief, revenge, and the darkness hidden in ordinary lives.
