Since the time immemorial, the knights who called themselves "Warriors of Light" have been chasing witches and sorceress who would taint the human race.
But once, their path was barred by the "Warriors of Darkness". And one did not want to let the other pass.
So had started the battle. Bloody... and Merciless..
And as the battle reached heavens, The great Gesser saw that they were equal, and if this battle was not stopped, everyone perishes..
And thus he stopped the battle.

So the Forces of Light, and the Forces of Darkness signed the Armistice.
And it was said that from that time on, neither good not evil can be made without mutual consent.
And it was said that there shall be a Day Watch to watch over the Forces of Light.
And it was said that there shall be a Night watch to watch over the Forces of Darkness.

Yet in a thousand years, The Great One will come who will take the side of Evil and the world will be plunged into darkness.

It began over one thousand years ago.