Elite math teacher Reiko was the most respected figure in the school. But she harbored a dark secret: in the quiet classroom after school, she would torment her favorite students with blowjobs, indulging in her twisted desires. One day, that secret suddenly spread across the entire campus, and she was collectively assaulted by the chairman's son and the vice principal, who mocked her as "this dirty slut!" This shocking turn of events violently shattered the school's everyday life.