Sakamichi trains hard with Imaizumi Shunsuke and Naruko Shoukichi now that Inter-high is over and the end of summer is approaching, so he can carry on Team Sohoku's spirit of support for one another, which Kinjou Shingo, Makishima Yusuke, and Tadokoro Jin, the third years, entrusted to him by Kinjou Shingo, Makishima Yusuke, and Tadokoro Jin, Team Sohoku receives an invitation to the Kumamoto Fire Country Mountain Event, an invitational race for teams who did well in the Inter-high, and its captain Kinjou chooses to send their core Inter-high team.