A long, long time ago, there was the Kingdom of White in the sky and the Kingdom of Black on the land.
One day, a boy is digging a grave in a town of the Kingdom of Black, where it has been destroyed by the magical beasts.
The former king candidate from the Kingdom of Black, called Skiers, visits the boy. The boy who has been found by Skiers determines to change the world as the Prince of Darkness.

On the other hand, the King of Light Iris, who is the guardian of the Kingdom of White, is worried about the balance between light and darkness being broken.

The news of Bar, who destroys the balance, arrives to Iris. The king of Darkness from the Kingdom of Black asks her for an alliance, to get rid of obstruction, Bar.

The king of Light Iris meets the ambassador from the Kingdom of Black, Prince of Darkness, and to make the world peaceful.

But their spirits will be broken by the King of Darkness.

The pact that two exchanged and the original sin which destroyed the world.
The story progresses to (origin) begins...