Hinomaru Sumo

His goal is to become a professional sumo wrestler and yokozuna! Ushio Hinomaru is on his way to visit Ishigami High School, famous for it's sumo program, but arrives at Odachi High School by mistake. There he meets Ozeki Shinya, who trains diligently at sumo, but whose dojo has been overrun by delinquents. Angry that they would defile the hallowed practice area, Hinomaru confronts the leader Gojo Yuma and challenges him to a duel.

Hinomaru is finally doing sumo in school! However, they need five members in order to participate in group tournaments. Ozeki and Hinomaru try to attract new members at club activity day. But Hinomaru's chankonabe stew which he planned to use to generate instrest tastes terrible and the plan fails spectacularly! But one other student thinks the stew tastes delicious! The student is Kunisaki Chihiro from the wrestling club, and he and Hinomaru hit it off well, since they are both in fighting sports.

Tsuji Kirihito has joined the club as a supervisor. The club's first step on the road to the national tournament is facing Eiga University High School in a practice match. The club members don't fully trust Kirihito, but they still go to Eiga High. There, Hinomaru encounters his former rival, National Treasure Kusunagi Sword, Kuze Sosuke.

Early in the morning, Kirihito orders the club members to harvest seaweed and do many other strange things, like standing on an unsteady boat to improve their balance. The club members admire Kirihito's methods, but have doubts about his experience and abilities. They eventually confront him. In order to demonstrate his coaching abilities, Kirihito declares that he will have the rookie Mitsuhashi Kei beat the other club members.

The Dachi High sumo club will be practicing with Ishigami High School in the next down. Ishigami High School is a powerhouse which took second in the Kanto sumo tournament. The former middle school yokozuna, national treasure Mikazuki Munechika, Sada Mitsuki is enrolled there. Hinomaru hoped to fight Sada, but Tsuji gives Hinomaru somewhere else to go. Meanwhile, Chihiro, forced to take remedial class for failing his midterm, encounters a mysterious sumo scout from another school.

Hinomaru is to practice at the Shibakiyama Stable, but he is so small they do not pay him much attention. Hinomaru is able to prove his prowess against a wrestler who had recently graduated. The relaxed atmosphere becomes tense, the practice intensifies, and someone starts watching from the shadows...

The inter-high prefectural prelims have begun! The unknown Dachi High was initially laughed at, but Hinomaru easily defeats a student from another school. Next the other team members also win and Reina and her friends cheer. After winning their initial bouts, they begin their match with the fated Ishigami High School. Kei has yet to win a bout, but he has strong determination in his eyes.

The score is 1-1 as Yuma's bout against Kanamori begins. Yuma is quickly cornered and asks himself why he's here. Before the match, Yuma went to the dojo where he learned karate before becoming a delinquent. He apologizes to the master for the things he's done. He asks to reenroll as a student, but the master flatly refuses, saying she will not teach karate to someone who hurts others.

The tense match between two national treasures Onimaru Kunitsuna and Mikazuki Munechika has ignited. Hinomaru has trouble keeping up with Sada’s movements. The Demon Wheel and Demon Storm techniques he developed are not effective. After several attempts at the double combo Hundred Demon Takedown, Hinomaru is caught by Sada’s Crescent Moon.

Immediately following the team battle, the individual tournament begins. Ozeki worries about fighting his teammates, while Chihiro is thoroughly excited. He uses his fighting instincts to win bout after bout. Ozeki grows nervous watching him. Meanwhile, Hinomaru hides the arm injury he received in the team tournament from the others, believing it would be rude to deny them a proper bout.

Following their heated tournament battle, the Dachi High sumo club return to school to find a banner congratulating them on their victory and encouragement from the other students. They are taken aback after learning that a video of the tournament has been circulated around the school until first-year Hori Chizuko appears and explains that she recorded and uploaded the video. And she has another confession to make.

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...