Fifteen dimensional realms, pierced by the Creator's "Holy Sword," formed this world. It was ruled by the "Gods of Light" and "Gods of Darkness," empowered and charged with leading the world toward peace.

However, a minor dispute ignited an all-out war between the two factions, engulfing all fifteen dimensions. This conflict raged for millions of years, until the "Holy Sword"—caught in the devastating battles—was shattered into pieces.

By the time the Gods realized their error and rushed to repair the world, it was too late. The Gods of Light held only three realms, including "Elder Ain," and the sword's hilt. The Gods of Darkness held only three realms, including "Chaos," and the sword's tip.

The remaining nine realms wander through distorted dimensions even now. These nine worlds are known as the "Dream World."

The war between the gods left dimensional rifts scattered throughout all fifteen realms. To prevent their remaining three realms from drifting apart, each faction forged a smaller "Holy Sword" from their respective fragments.

The blade created by the Gods of Light is called "Hilt Slayer," while the one forged by the Gods of Darkness is named "End Slayer."

Just as the Creator had once done, the two factions pierced the center of their three realms with these swords. They then fell into a deep sleep to gather the energy needed to restore the final realms of the "Dream World."