Amano reaches the kingdom of Azuma to investigate signs of the Lord of Chaos and quickly becomes entangled in Caesar's ruthless drive for control. A sudden uprising among enslaved demon beasts throws the realm into disorder, while the long-absent Munhihausen reappears to exploit the turmoil. Relying on Buju's strength and keeping his sister Megumi's safety in mind, Amano races to contain the spreading destruction before the fragile balance between realms collapses once more.