Demographic: Seinen Genre: Romance, Drama
Born twelve years apart, siblings Koshiro and Nanoka were separated when their parents divorced and moved to different parts of Japan; as a result, they both grew up hardly aware of the other’s existence.
The story begins when 15-year-old Nanoka moves to Tokyo to live with her father and brother, the latter being 27 years old and employed by a marriage-arranging company. Koshiro first encounters Nanoka on the train one morning, and returns her dropped train pass. Despite their age difference, they feel a brief spark of connection before they go their separate ways.