The Demon King is responsible for everything wrong with the world—chronic depression, unstable government, extreme weather, unemployment, a ruined breakfast, and a rejection from the girl you like. The King has commissioned the legendary Hero to deal with it. The party handles all the combat on their own; your job is to upgrade them, equip them, and watch. EXP accumulates even when you are not playing, which means your team grows stronger simply by showing up each day.