Shachiku Dungeon Master no Shokudou Keiei Danjite Shijou Saiaku no Maou Nado de wa Nai!!

A man who works as a dungeon master in a fantasy-themed restaurant finds himself transported into the world he created. He must now manage a real-life dungeon and run a successful business while dealing with the challenges of a living, breathing fantasy world. One of the dungeon's inhabitants claims to be the evil overlord, but the protagonist insists they are not the worst villain possible. The story includes an additional chapter that expands on the events and developments within the world.