Ai Sayama always ignored her students and the vice principal. One day, after injuring a student, she is forced to take responsibility—her anus is brutally licked until she can no longer resist and is ultimately raped. Overwhelmed by pleasure erupting from her anus, she writhes, moaning and convulsing in orgasm. Humiliated and drenched in sweat, she repeatedly climaxes against her will. The intense pleasure renders her helpless, her most private anal opening exposed to all, her sensitive weakness ruthlessly exploited, as the strict female teacher is reduced to a female sex slave.