Tachibana Wataru is a rookie keirin cyclist determined to defeat his rival, Kiyohara Ryo. Sasaki, Kiyohara's lifelong friend and trainer, sees her older brother in Wataru.
| Actor | Role |
|---|---|
 Kazuhiko NishimuraTachibana Wataru | Tachibana Wataru |
 Chikako KakuDoctor Sasaki | Doctor Sasaki |
 Masaki NishimoriKiyohara Ryo | Kiyohara Ryo |
| TTogo ShimuraSakura Chiezo | Sakura Chiezo |
 Masao KomatsuSakura Bunzo | Sakura Bunzo |
 Ren OsugiAkiba | Akiba |
 Hitoshi OzawaSasaki Kazumasa | Sasaki Kazumasa |