Musashi made a vow to his buddy Kojirou Kanemaki five years ago that when they grew up, they would become samurai, join a league, and embark on demon-slaying adventures. But things have changed since then. With society now praising and worshiping demons, samurai are despised and shamed. Musashi, fearful of expressing his ambition to become a samurai, merges into the town's culture by working as a miner while secretly honing his swordsmanship. Meanwhile, despite the fact that he is a direct descendant of a samurai, Kojirou abandons his commitment to his old buddy. Musashi's perspective changes after saving him from a near-death experience. Despite his conflicting thoughts, Kojirou continues on a voyage with Musashi in the hopes of discovering his genuine feelings. battling against