Teacher Yui lives each day at the mercy of her students, constantly subjected to humiliation and training. After school, she is perpetually targeted for bullying—her big breasts exposed, forced to wear embarrassing clothes without a bra, pushed into one degrading situation after another. Even during class, she secretly suffers torment from a vibrating stimulator, enduring daily sensations of both pleasure and pain. She is further violated by other students, suffering terribly, yet still finds herself aroused by his sadistic attitude, her pussy getting wet. Deep down, with each ordeal, is she craving something?