Izumi Norimoto and Kazusa Onodera were like siblings when they were small children, laughing and playing together. Kazusa began to perceive him as something different as their bodies evolved through middle school; unfortunately for her, the other females did as well. Kazusa had no choice but to keep her distance from him as she entered high school. She makes acquaintances and keeps her thoughts occupied after joining the reading club. The club's reputation has deterred all instructors from accepting the duty of becoming their adviser, as they are known across the school for reading aloud sex scenes in literature novels.