Naho is a serious teacher with a strong sense of justice. After witnessing the excellent student Kaho being bullied by male classmates, she reports it to the principal and they are punished. The students hold a grudge and make Naho their next target. One day she is called to the nurse’s office, shown a video of Kaho being toyed with, and threatened with its spread… With her strong sense of justice, Naho ultimately sacrifices herself to protect the student, becoming their after-school meat toilet.