The new shonen action manga from the creator of Magi is here! Musashi is a teenager living under demon rule. As children, he and his best friend made a promise: to become the greatest warriors in the world and overthrow the demons. But life intervenes, and five years later, he finds himself about to become a miner. Yet can Musashi truly be satisfied with a "normal" life?

The Conquering Heroes Musashi has brought the Awaji campaign to a close by tapping into the power of the Obsidian Goddess. As the victorious samurai celebrate, Michiru reunites with Musashi after finally emerging from her father’s spell. However, with the remaining Obsidian Eight plotting in the shadows, Musashi and his companions may have little time to enjoy their hard-earned victory...