All the people surrounding her refuse to express their feelings and emotional boundaries. The resulting everyday life is characterized by ruthlessness: Even friends reduce each other to their appearance and shamelessly take advantage of each other. Minori runs against this by attacking ignorance whenever she encounters it, whatever the consequences might be.

High school student Aya Tsukimori becomes cursed and is unable to leave her school dormitory. Meanwhile, many students begin reporting ghost sightings at the school, while others go missing and are later discovered to have drowned mysteriously. Soon, Aya attempts to communicate with fellow student Michi Kazato, who begins investigating the disappearances of her friends.