Naral Island, a continent with swords and magic in which humans and monsters coexist. The terrible Demon King lives there. In ancient times, the first-generation hero defeated the Demon King. Over the many successive generations since then, the Demon King has been resurrected, and the hero who opposes him has likewise reappeared. Girls attend a school for adventurers in order to defeat the Demon King when he appears again. Though a bit absent-minded, Yusha has the body of a hero. The holy elf Seyla's trouble never ends because she is too serious. The cheerful warrior Fai loves to eat. Mei is