Shurannosuke Sakaki, a ronin renowned for his icy demeanor and deadly katana skills, carries a fateful emblem of crossed scythes that foretells doom. Employed by the Nakura Clan, he embarks on a perilous quest to liberate Princess Mayu from the clutches of the Seki Ninja. To emerge victorious against the Seki Ninja's brutal underlings, Shurannosuke must unleash his unparalleled swordsmanship to its limits.