For decades, superpowers and psychic abilities were thought to be mere science fiction, but the discovery of a certain particle called the "Astron" at the end of the 20th century proved to the world that these wondrous phenomena were real. Nowadays, these abilities have been dubbed "astral abilities," with those who can wield them being knows as "Astrals." Pose as a student and infiltrate a famous academy for Astrals.