A samurai chasing cursed relics through Japan's death throes, and the show treats both the history and the supernatural like they belong in the same sentence. The soundtrack arrives before the plot does, pulling you into each scene with melodies that stick like they've been stuck in your head for centuries. Nobody talks about this one, but the moment the theater troupe's conspiracy clicks into place, you'll understand why the Bakumatsu period needed a story exactly like this: violent, strange, and bleeding with purpose.

During Japan's turbulent final years as a feudal nation, Yojiro Akizuki roams the countryside as a sword-for-hire with an unusual obsession. Beyond standard mercenary work, he hunts supernatural artifacts across the land, pursuing each lead with ruthless intensity. His violent quest for these objects leaves a trail of blood in his wake. Along the way he crosses paths with a traveling theater troupe whose members have dark aims of their own, and it is unclear whether the encounter is pure chance or the work of a hidden plot. Amid the upheaval of the era, a sinister existence called the Hasha no Kubi threatens to spread chaos, a head said to grant rule over the whole country to whoever claims it. Opposing it is a shadowy figure known as the Eternal Assassin, bound to fight the head and seal it away. The result is an action drama set as the samurai age draws to a close.