A “small” new student, Ushio Hinomaru, appears before the weak little sumo club of Oodachi High School! The words “big” and “heavy” are the rules to this sport, which does not fit this newbie any inch, but this guy goes and does what...!? Ushio and the small sumo club climbs its way to the top! The goal is Hinoshita Kaisan, a title for the highest rank in professional sumo, equivalent of Yokozuna.

Atsushi Abeas Hinomaru Ushio (voice)
Fukushi Ochiaias Shinya Ozeki (voice)
Kentaro Kumagaias Yūma Gojō (voice)
Takuya Satoas Chihiro Kunisaki (voice)
Ayumu Muraseas Kei Mitsuhashi (voice)
Takuma Terashimaas Kirihito Tsuji (voice)
Mikako Komatsuas Reina Gojō (voice)
Rui Tanabeas Chizuko Hori (voice)
Justin Tomimorias Daniel Stefanov (voice)
Shunsuke Takeuchias Sōsuke Kuze (voice)