Bunka Ichijo is a graduate student with an IQ of 200 who tries to investigate the strange deaths happening nationwide after people supposedly watched a cursed video and her younger sister also did the same out of curiosity.
Nanami Ishikawa works as an editor at a publishing company. She travels Hiroshima to go after her father Asahi who left home. During her visit to Hiroshima, she learns about the tragic story of Asahi's older sister Minami Hirano. When Minami Hirano was 13 years old, she was exposed to radiation by an atomic bomb.
Sakura, who just graduated from a university, begins to work at a library in Katsuragi, Nara Prefecture. She is flustered with her new job and unfamiliar environment. One day, an elderly woman named Reiko visits the library and shows Sakura an old photo of a man and a woman. Sakura takes her to the place where the photo was taken. Reiko sometimes brings other photos and Sakura takes her to the place where the photos were taken. While doing this, Sakura learns about the history and culture of Katsuragi. She also talks with the residents and grows as a person.