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Looking up at the sky, you will find dragons soaring and roaring above, and the kingdom of angels standing in the center of the sky. Elves, orcs, demons, and monsters are fighting endlessly on the earth. Human beings have built cities in the wasteland, guarding the last fire and hope. The undead are like mercenaries, working hard everywhere for wealth. When all the creatures in the world heard it in their sleep that day and saw the black tide rolling up huge waves towards the world, all creatures understood in an instant that the final judgment was coming, and in order to hope and survive, they must change and strengthen themselves.