Anri Nonaka, the daughter of a wealthy family, lives alone in a conveniently located apartment near her school. Although her caretaker, Kondo, resides with her, he rarely interferes in her daily life, allowing her to live almost independently. Anri gradually develops feelings for her homeroom teacher, Ms. Takagi, but becomes ensnared in Takagi's disturbing sexual desires. The story depicts how Anri's innocent emotions, born from her everyday routine, slowly become twisted and distorted.