Freshly transferred female teacher Sayaka Nanjou, though outwardly attractive and often seen as a romantic figure, is in fact serious-minded and strongly principled, causing students to keep their distance. She forcibly organized remedial lessons for the underachieving students in her class, pushing them to improve academically. However, her aggressive methods bred resentment among the students, making her extremely unpopular. One day, after reprimanding a rude graduate, she was targeted in retaliation. The man broke into her home and assaulted her. Rape photos and videos were taken as proof of the crime, and she was forced to become the sexual plaything of the men involved. Her pride was utterly crushed, leaving her with deep psychological and physical trauma, suffering the most profound humiliation.