Koharu Higashimura is a 17-year-old high school student, living in a rural town. Koharu lives with her older sister Hazuki and mother Sawa. 14 years ago, Koharu's father abandoned their family after meeting a new woman. One evening at dinner time, Sawa tells her daughters that their father has terminal cancer and they should go see him before it's too late. Sawa gives her daughters a camera and asks if they can take a picture of him, because she would like to see. Koharu and Hazuki then leave for the hospital where their father is hospitalized. While riding the train to the hospital, Koharu, who has doesn't have any memories of their father, asks Hazuki about their dad.