Ryota Moriyama, a senior at Kyoritsu University, receives a job offer at a first-rate company but gets dumped by Saki Nishino. His professor tells him that he can graduate on the condition that he joins the sumo club and competes in at least one match. With only a single member, Honoka Oba, for the past two years, the sumo club is on the brink of collapse. In order to graduate, Ryota endures Honoka’s strict training methods and starts to recruit other members.

Suspecting that his childhood friend, a professional boxer, is having an affair with his fiancee, a businessman starts training rigorously himself in order to take him down.

Gota Araki begins work at a new high school. He is assigned to the school's notorious 2nd Year, Class C as their homeroom teacher. All of the students in Class C are violent delinquents, ...

Lord Oda Nobunaga plans to control Japan where rival warlords battle by waging war against several clans. His vassal Araki Murashige stages a rebellion and promptly disappears.