Machi, Tomohiko and Hotaru attend the same high school. Machi misses her older brother, who disappeared six years earlier. The trio takes up his trail, which leads them first to Tokyo and then across the sea.
Overview：Machi, Tomohiko and Hotaru attend the same high school. Machi misses her older brother, who disappeared six years earlier. The trio takes up his trail, which leads them first to Tokyo and then across the sea.
