During the early Edo period, a time of peace, Lord Tokugawa Tadanaga organizes a combat tournament. Previously, bouts were conducted with wooden swords; this time, live blades will be employed. Fujiki Gennosuke, who has only one arm, and Irako Seigen, who is blind, are set to face one another in this contest. Both are students of Iwamoto Kogan, recognized as Japan's foremost swordsman. Each is resolved to demonstrate that he is the rightful heir to Iwamoto's school. Yet, only one victor can emerge. Thus commences a tale of crossed paths, strife, and peculiar fates.