Fraud Revolver

In this world, struggle and climbing are instincts deeply rooted in the devil's soul. Their disputes never end, but the way they compete for interests continues to evolve: from fighting each other, to driving lower demons to fight for them; until finally, they give part of their power to dying mortals, making them the devil's agents through a contract. And only the agent who survives to the end deserves the right to continue to exist. Winner takes all. The loser? There is no need to pay attention to the consequences of his defeated generals. (Updating by chance......)