The story begins with the lord of netherworld creating a game for the dying people. The rules are simple: if you win, you get rewards, and if you lose, you'll be erased from existence. The dying people are attracted to the game, until one day, when the game has an 80 percent mortality rate. The king of hell shows up and kills everyone in his path. He tells everyone that he's the first person they've ever seen who's really sorry for messing up their stall. He says that it would be a great thing if the people in the world could eat such good food. After that, he sets up a shop on the street, but he doesn't show up. He goes on a hunt for a key to the door, and nobody has seen him since.