Gakuen Injoku Rinbukyoku ~Junketsu no Otome ga Midara na Mesu e to Ochiru made~

Protagonist Ariga Mio is a strong-willed girl with a fierce sense of justice, never backing down from fights at school. Her parents, worried about their reputation due to her misbehavior, force her to transfer to a remote school where her younger brother attends. Reunited with her timid brother, Mio quickly clashes with the bossy Saotome Kanon at the dorm. The next day, she's summoned to the guidance office, where she learns of the 'Moral Discipline Club.' A group of burly men surrounds her, but Mio's spirit remains unbroken. For 'guidance,' they forcibly take her virginity, gang-raping her one after another. Despite this, her fighting spirit persists—for now. But soon, even teachers and classmates gaze at her with lustful eyes. In this corrupt school with twisted rules, Mio becomes prey to the unleashed desires of men...