Kyoushi - Red Line Crossing

The teacher Uenishi has a secret affair with a schoolgirl and is found badly maltreated in the building of a junior high school. In order to cover up the scandal, the school management instructs the teacher Mori, who is considered particularly "tough", to investigate the crime behind the backs of the students. Together with four of his colleagues, he begins to rummage through the students' private belongings in a classroom and discovers something monstrous. In a whirlwind of human abysses the facade of the teachers begins to crumble.