What happens to the hero after he defeted the deman army and saves the world? He becomes useless and a burden for the world. What the hero can do now? Joins the demon lords army. But he has to start a...more

What happens to the hero after he defeted the deman army and saves the world? He becomes useless and a burden for the world. What the hero can do now? Joins the demon lords army. But he has to start at the bottom and work his way up the ranks. and do what he is best at, but on the opposite side this time.