Kingdom chose a hero
kingdom chose a fake
kingdom will end up dead
if I don't fight for their sake

Story is about a boy who named Nihro who is the chosen hero. still his kingdom chose someone else as the hero. And now without any support from the Kingdom Nihro has to fight the hoards of demons and evil beings and demon lord while not trying not to end up dead. Its his journey of uncovering the truth behind his ordeal.