Bekku Nanaki possesses mirror clairvoyance. She relocated to Tokyo from the countryside to flee the disasters she foresees. There, she observes a road accident involving a mobile fish vendor, who saves her from being crushed by a falling billboard. The following day, he is revealed to be Banjou Kizaki, her classmate and a student who has been held back due to incidents and accidents that others blame on his bad luck. His eccentric behavior, however, captures her attention, which he explains as an attempt to alter the future...