After winning a difficult match, the Dachi High sumo club cheers, but Reina feels uneasy and does not join in the cheerful mood. Reina breathes new life into Dachi High through their loose and lax mood, strengthening their resolve to win. Then the team tournament begins. Leading off against Eiga High is Chihiro, who will face Hyodo Masato, who turns out to be his brother.