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?
As the Obsidian Eight put their Great Chain into action, a horde of demons descends upon Hakujishi Castle. Musashi leaps into battle against the Black Dog Mikito, whom everyone had presumed dead after his defeat by Shishikado. With Musashi on the back foot, the Obsidian Goddess makes a timely appearance, but will it be too little, too late?