The Seven Keys have been collected, and the world created solely to entertain has come alive. The one who gains control over them will rule Sphere. Who will it be--the Demon King, the digitized players, the corporations, or the people hiding under the masks of the Seven Brothers? The stakes are higher than ever, and the merchant's life is once again at risk--after all, he holds one of the Keys that grant the power to create and destroy worlds at will...