Folklore recounts an unbeatable discipline called Mutsu Enmei‑Ryu, a hand‑to‑hand art that lets its practitioner vanquish countless armed foes with astonishing swiftness and might. This chronicles three successive generations bearing the Mutsu name, as they confront and overcome the fiercest combatants of their era across centuries, forging legends that endure through everlasting memory for all time.