You are the Demon King because there is no one strong enough to dethrone you, and you hate it. You absolutely despise being referred to as the lord of darkness or the king of terror. You only want to keep your subjects safe. Humans are terrified of you and your people. They continuously send "heros" to kill you to "save the world." One day, the humans send a mercenary hired by the human king named Ulrich to kill you. The only problem is that no one knows what you look like. Ulrich has set out to find you when he unknowingly comes across you as you are wandering your domain to make sure your people are safe and they are following the law of not hurting humans unless they are defending themselves against humans.