Derkila holds the title of the One Demon King—basically the highest authority in the entire Demon World. He's widely recognized as the most powerful demon around, with influence that touches every corner of their society. The catch? Nobody knows where he is. His disappearance is such a big deal that most people just refer to him as "The Missing Demon King" at this point.
Content compiled by AnimeList.moe from publicly available sources.
