It's sumo vs. pro wrestling!! Kiozan, the problem child of sumo known as "The Brawler of the Sumo Ring," faces "Hell's Angel" Sekibayashi Jun, the star of pro wrestling! The match starts with Sekibayashi on the ropes from Kiozan's wild rush! Who will be left standing in the end: Sumo or pro wrestling!?

The first round of the tournament has finally entered the final block! Who won the seconds-long match between "The Floating Cloud" Hatsumi Sen and "The Faceless Man" Chiba Takayuki...? This is followed by the bloody duel between "The Dissector" Hanafusa Hajime and "The Bloody Tusk" Bando Yohei. More mixed martial arts, cross-industry battles of pride are about to begin!!

A blood-boiling modern martial arts comic! The Kengan Annihilation Tournament, a scramble for the chairmanship, has been announced, and all corporations and fighters are on the move...!!! A mysterious man named Kiryu Setsuna appears before Tokita Ohma. Fighters seek to win, and CEOs seek the chairmanship. Yamashita Kazuo has been saddled with debt to become a Kengan Association member, and Tokita Ohma has entered the tournament as Kazuo's affiliated fighter. What lies in store for them!!!!!? The day of the tournament has come at last!!!

The first round of the Annihilation Tournament begins!!! A martial arts tournament to decide the strongest corporation and fighter in Japan has begun!!! 32 fighters and 32 corporations clash with their pride and interests on the line... Which one will win...!!?? The tournament bracket is announced... And the unmissable first round is finally underway!!!

Losing will spell bankruptcy! And the opponent is one of the biggest corporations in Japan! These are the hopeless stakes that the businessman Yamashita Kazuo faces. He has no one to turn to but the mysterious fighter Tokita Ohma, heir of the Niko Style. His opponent is a fighter hired by Penasonic, the biggest electronics manufacturer in Japan: Inaba Ryo, an assassin also known as "The Black Phantom." These fighters who claim to be the strongest clash with their pride on the line, to decide the strongest business and fighter in Japan!!

Who is the strongest? All the tournament entrants have arrived! A martial arts tournament to decide the strongest corporation and fighter in Japan has begun! Judo fighters, pro wrestlers, riot police, mixed martial artists, sumo wrestlers, mercenaries, serial killers, classical martial artists, etc. 32 fighters who believe in their own strength, and the 32 corporations that hired them, clash with their pride and interests on the line!!!!

Business meets violence. The ultimate fighting manga begins! Yamashita Kazuo is a 56-year-old man with a broken home stuck in a dead-end job, but suddenly he gets called in by the president of his company! The timid Yamashita Kazuo learns the truth about the Japanese economy: that corporations are wagering massive profits on martial arts fights between hired fighters. They are called the Kengan Matches!!!! Kazuo is given a mission to manage their company's fighter: a young man who is violence embodied named Tokita Ohma!!! What lies in store for Yamashita Kazuo...!!?? Violence meets business meets human drama. Why do men fight? What do they grasp with their fists? The ultimate martial entertainment begins here!!!!