Kazuho Anamori, ​​who had difficulty fitting in with her class, meets Miko Karakida, who suffers from heart disease, and becomes close friends with her, however, six months later, Miko dies while hospitalized. Kazuho receives a letter saying that there is something to discuss about Miko. When she goes to the address she has been called to, she finds a mysterious transfer student, Rio Ukima, waiting for her.

On August 12, 2015, Hasegawa proposed to Ichiko. Ichiko is moved by Hasegawa's proposal and sheds tears, but the next day, she suddenly leaves home, seemingly shocked after seeing the TV news. Where did Ichiko go? Hasegawa reports the disappearance to the police, and the detective in charge of the investigation tells an unexpected story.

Having failed with his business and gone absolutely penniless, Masao (45) divorced with his wife, and is currently leading a hopeless life in Ibaraki. One day, a mysterious high school girl, going by the name Emiko, showed up before Masao. Every now and then, Masao would be toyed around by Emiko, but little by little he started taking a liking to her loveliness. As days went by, Masao started opening up to Emiko – something that he rarely did to others. However, there was just something about Emiko – something that bothered Masao - that wouldn’t go away.