"Kengan Ashura" is set in a world where powerful corporations and wealthy individuals settle disputes through gladiatorial combat, employing fighters known as "Kengan" fighters. These battles take place in underground arenas, where the outcomes determine the fate of businesses, contracts, and personal vendettas. The story centers on Tokita Ohma, a skilled but enigmatic fighter with a mysterious past, who becomes the representative of the Nogi Group, a prominent corporation led by Nogi Hideki. Ohma's journey begins when he is recruited by Yamashita Kazuo, a middle-aged salaryman who becomes his manager and confidant. Despite his unassuming appearance, Yamashita plays a crucial role in navigating the complex world of Kengan matches and corporate politics. Ohma's fighting style, the Niko Style, is a highly versatile martial art that combines brute strength with precise techniques, making him a formidable opponent. As the series progresses, Ohma faces increasingly powerful adversaries, each with their own unique fighting styles and motivations. The narrative unfolds through a tournament arc, where fighters from various corporations compete to determine the strongest Kengan fighter. The tournament serves as a platform to explore the backgrounds and philosophies of the fighters, many of whom have personal stakes in the outcome. Characters like Gaolang Wongsawat, a Muay Thai prodigy, and Wakatsuki Takeshi, a genetically enhanced superhuman, add depth to the competition, showcasing the diversity of martial arts and combat strategies. Interwoven with the tournament are flashbacks that reveal Ohma's past, including his training under a mysterious figure known as Niko and his connection to a shadowy organization called the Worm. These flashbacks provide context for Ohma's motivations and the origins of his fighting style, while also hinting at larger conspiracies within the Kengan Association. The series also delves into the political machinations of the corporations, highlighting the high-stakes nature of the battles and the lengths to which individuals will go to secure power. As the tournament progresses, alliances are formed, rivalries intensify, and the true nature of the Kengan matches is gradually unveiled. The series balances intense fight sequences with character development, exploring themes of ambition, loyalty, and the pursuit of strength. By the end of the first season, Ohma emerges as a key player in the Kengan Association, setting the stage for further conflicts and revelations in subsequent arcs.