The yama is standing in the hallway of the dungeon. She must have cleared it. After all, the people who escaped from the dungeon are reborn as new human beings. This must be the story of the protagonist, who is a poor scholar who never gets a position in government. He asks the protagonist if he is brave enough to replace him. The protagonist says that he has a case in his books about an inn that had one person die every night. If the protagonist can tell him how that person died, and where their body is in the next few days, he wins the bet. He says that his stamina is good, and he wouldn't be a coward. He tells the protagonist that this game requires them to team up, and that they will gather at noon to exchange information. They find a law on each of the four floors of the inn, which states that the murderer will commit murder at 9 p.m., the protagonist will ask the yama about the victims who died during the players stay there, and then he will use the prophecy prop to receive two important clues.