Seemingly gentle health teacher Aishiro Nagi hides a dark past as a former delinquent, one that continues to haunt her present. When she witnesses her younger brother being bullied, she seeks revenge—only to ignite the fury of her students. In retaliation, the students conspire with other teachers to subject her to brutal sexual training. Her uniform is torn apart as she's violated with machine vibrators and drill vibrators, her vagina mercilessly conditioned. Resisting Nagi-sensei is silenced by thick cocks shoved into her mouth, forced to endure relentless creampie after creampie. This work delivers a shocking narrative woven from contrasts between past and present, escalating emotions, and intense sexual domination.