Former bully Yui Nishikawa becomes the victim after her socially oblivious homeroom teacher's ill-advised comment sparks a reversal of roles. She is subjected to various forms of torment: gang rape in the nurse's office, forced blowjobs before class, silent-library humiliation with strict no-noise rules, facial after facial in the classroom, and coerced threesome sex. Never realizing how painful it is to be on the receiving end of bullying, Yui finds no escape as the abuse continues daily. Gradually, she begins surrendering to the pleasure of penetration, losing herself completely to this brutal new reality.