The Desperate Mule, Personally Kills the Dark Empire

They originally wanted to go out and make a fortune, but were betrayed by the smuggler, and seven ordinary people fell into purgatory. Brothers are separated, companions are darkened, life and death are uncertain, and everyone is crushed and reshaped by fate in a desperate situation. From a humble mule to survival, he sees through the dangers of human nature and plays with the rules of darkness. After twenty years of bloodshed and ups and downs, the former mortals have completely transformed. Who will become a feared hero?