In ancient times, humans and demons waged fierce wars against each other. These wars devastated mountains, burned forests to the ground, and split the heavens. A thousand years ago, in a decisive battle, humans managed to prevail. However, before being completely destroyed, 77 of the most powerful demons decided to avoid their fated demise. Using powerful dark magic, they embedded themselves within a newborn child found on the battlefield. By combining all their skills and powers, they created an indestructible vessel that could potentially destroy the world. Learning of the demons’ plan, the humans tried to stop them but were too late. Nothing they knew at the time could destroy or even harm the demonic vessel. Therefore, to delay their dire fate, the humans sealed the vessel with its barrier inside a black rock, hoping to slow its growth until they could find a way to destroy it.
Years passed, followed by centuries. Until, a thousand years later, the demonic vessel awoke once again.