After the Inter‑high concludes and summer nears its end, Sakamichi pushes himself hard alongside Imaizumi Shunsuke and Naruko Shoukichi to preserve Team Sohoku"s mutual‑support ethos, a responsibility passed down by Kinjou Shingo, Makishima Yusuke and Tadokoro Jin—third‑year seniors soon to graduate. One day, Team Sohoku is invited to the Kumamoto Fire Country Mountain Race, a selective event for teams that excelled at Inter‑high; their captain Kinjou selects the core Inter‑high squad to compete. They train rigorously for the demanding terrain and expect a contest among fellow teams in the mountains.