Legend has it that, long, long ago, the universe was a single whole. Then chaos gave way to order, and light and darkness split apart. The light gradually rose to become the Human Realm, while the darkness sank to become the Demon Realm. After tens of thousands of years of upheaval, the Lord of the Demon Realm finally united it under his rule. Yet after doing so, he was no longer satisfied with being merely its king. His swelling ambition turned toward humanity... "Since the world was originally one when it came into being, why not reunite its shattered pieces into a whole once more?" Now, let us see how a band of fearless adventurers will turn the tide and save the world from the catastrophe about to engulf it...
