Duel Princess

Once upon a time, the world was vast. - However, the world is closed for each continent by the three Demon Kings that appear on each continent. - People were forced to live in a world that had lost its expanse, scared by the threat of the Demon King ... - Then, at some point, hundreds of years have passed, a turning point will come. - On a certain continent, two princesses subdued the Demon King with a brave man who suddenly appeared.