[Machine Translation] Tetsuo is about to enter junior high school and decides to travel alone to his father's hometown, Nagaoka. On the train, strange things start happening one after another. Tetsuo and a young girl of the same age, Midori, come face to face with the various pasts of the adults surrounding them... Set in Nagaoka as winter turns to spring, this moving time fantasy depicts the sensitive heart of a boy as he grows from a child to an adult. A limpid story of a boy's growth by the author of "The Adventures of Kamba" series.