Ichika, who lives on a remote island in Nagasaki Prefecture, has been secretly in love with her paternal uncle for a long time. Her uncle lives in the city and has not been able to come home for a long time because of his busy work schedule, but she still thinks about him even though they are not together. One day, unable to suppress her faint feelings of love, Ichika tells her parents that she will be going to the concert by train in the area where her uncle lives and that she wants to stay at her uncle's house. She comes to her uncle's house in the city.