During the tranquil Edo Era, under the rule of Lord Tokugawa Tadanaga, a martial arts competition is announced. Unlike the past where wooden swords were wielded, this tournament will showcase real blades. The showdown features Fujiki Gennosuke, a one-armed warrior, and Irako Seigen, a blind swordsman – both trained under the renowned Iwamoto Kogan, Japan's legendary sword master. As they strive to claim the mantle of Iwamoto's successor, only one can emerge victorious. Thus commences a tale of intertwined fates, discord, and mysterious destinies.