In the backdrop of Japan's corporate world, conflicts are resolved through intense hand-to-hand combat since the Edo era. The Kengan Association orchestrates these battles, where Ouma Tokita, known as 'The Ashura,' aims to dominate as the ultimate martial artist. Joining the Nogi Group as a Kengan fighter, he is paired with Kazuo Yamashita, a mundane company employee turned manager. Together, they face the cutthroat challenges of the Kengan arenas. Can they endure in this unforgiving realm of combat and competition?