Kogawa Iori once endured a gang rape by her classmates, but found the strength to rebuild her life thanks to her homeroom teacher, whom she deeply admired. Inspired by him, she dreamed of becoming a teacher herself. Now, she has taken a teaching position at a troubled school, successfully turning around a delinquent class, and is engaged to be married—her life is at its peak. However, everything changes when a letter from a student arrives containing photos of her past rape, which begin circulating among her students. As the images spread, her psychological stability starts to crumble, plunging her into a deep mental crisis.