Momose Riko was born into a branch family of individuals with special abilities. However, during the judgment ceremony, she was deemed powerless and endured mistreatment from her parents and her talented younger sister. Later, she awakens her abilities but chooses to hide them, wishing to live a quiet life. At 17, during her spring semester, her homeroom teacher, Ren Ichijo, the next heir of a clan that governs ability users discovers her secret. Intrigued, Ren begins to approach her abruptly, but...