Takako's high school has a unique tradition. Every year, the school's 1000 students walk 80 kilometers in 24 hours. As this is her final year of high school, Takako decides to work up the courage to talk to her stepbrother You, whom she has never spoken to before. Classmates who are unaware of their relationship read something more into their awkward overtures.
Mikako Tabe
Takuya Ishida
Kaku Tomohiro
Aki Nishihara
Shihori Kanjiya
Tasuku Emoto
Rosa Kato
Sosuke Ikematsu
Madoka Matsuda
Kyūsaku Shimada
Ryosei Tayama
Kaho Minami
Ai Takabe
Narumi Konno