The first full-length adventure from Gosho Aoyama, the legendary creator of Case Closed!

Yaiba Kurogane is an energetic young swordsman who's grown up in the jungle, training to be a samurai with his father, Kenjuro. When they return to Japan, chaos seems to follow wherever Yaiba goes! Destined to be a legendary hero, Yaiba must learn to be a true samurai and save the world!

Princess Kaguya has set her sights on Sayaka, a descendant of the dragon priestess, in order to gain more power. Yaiba throws himself into battle to stop her but falls before Gekko, who wields the Demon King's sword, Maouken. Yaiba and his companions then make a desperate decision to revive Onimaru, who's still sealed in carbon, and team up with him against Kaguya. But they only have three days before Kaguya begins the ritual to drain Sayaka's essence. The epic battle to save Earth is about to begin!