After winning the fierce Inter High race, Sakamichi and the other Souhoku team members receive an invitation to compete in the Kumamoto Hi Province Mountain Range Race towards the end of summer. The top-tier teams from around the country compete in this race, including Souhoku's rivals Hakone Academy (which yearns to take down Souhoku), Kyoto Fushimi, and Hiroshima Kureminami - as well as Kumamoto Daiichi High School's team led by Shin Yoshimoto.
| Actor | Role |
|---|---|
 Daiki YamashitaSakamichi Onoda | Sakamichi Onoda |
 Jun FukushimaShokichi Naruko | Shokichi Naruko |
 Kentaro ItoJin Tadokoro | Jin Tadokoro |
 Showtaro MorikuboYusuke Makishima | Yusuke Makishima |
 Hiroki YasumotoShingo Kinjou | Shingo Kinjou |
 Koji YusaAkira Midosuji | Akira Midosuji |
 Tomoaki MaenoJuichi Fukutomi | Juichi Fukutomi |
 Tsubasa YonagaSangaku Manami | Sangaku Manami |
 Tetsuya KakiharaJinpachi Todo | Jinpachi Todo |
 Hiroyuki YoshinoYasutomo Arakita | Yasutomo Arakita |
 Kohsuke ToriumiShunsuke Imaizumi | Shunsuke Imaizumi |
 Mamoru MiyanoShin Yoshimoto | Shin Yoshimoto |
 Satoshi HinoHayato Shinkai (voice) | Hayato Shinkai (voice) |
 Yoshiyuki ShimozumaRyo Ibitami (voice) | Ryo Ibitami (voice) |