In this chapter, the demon king explains that he has always been alone since he was born. He explains that his first friend, the long-living demon king, is kind of like a "long live demon king" because of his "doings" . He tells the audience that after building the castle, yun has made him a "demon king" and has turned the mountain in which he lives into a place where the humans can live. He also explains that if a human were to own this castle, he would be easy to kill. He shows the audience the rooms in the castle where he has set traps to trap intruders. He asks the audience to climb onto his bed so that he can show them the rooms he has prepared for them. He wonders if the guests will be willing to become his underlings.