In the world of Kengan Ashura, business decisions aren't sealed with contracts, but with hired gladiators. Follow Ouma Tokita, known as 'The Ashura,' as he seeks to prove his strength in a world where powerful fighters settle disputes for wealthy businesses and merchants. Recruited by Hideki Nogi of the Nogi Group, Ouma, along with his manager Kazuo Yamashita, navigates a path filled with intense battles orchestrated by the Kengan Association. Amidst fierce competition, they must strive to emerge victorious and claim the title of the strongest.