The Dachi High sumo club has been invited to train with the Shibakiyama Stable. At Hinomaru’s suggestion, they go to visit Nagoya Castle. Hinomaru then volunteers for a sumo event there and ends up challenging another student there. That student, coincidentally, is national treasure Odenta Mitsuyo, Hikage Tenma. Their bout quickly becomes a serious battle. Hinomaru tries to execute the Hundred-Thousand Demon Drop, but...

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