The monster tells the boy that he has to force the demon to come to an end, otherwise it will become a container for his power. The boy asks why there is a chain around the demon's neck, and the monster tells him that it looks like his three heads are over. He asks if the boy is willing to be his servant, but the boy says that he doesn't know what he's talking about. The monster says he wants to take revenge on the boy for helping him fight. He says he defeated the "legendary lord heaven dog" , and now he is "swamped by a demon" . He wants to kill the boy, but he can't because the demonic power is too strong for him. He explains that he was accidentally entangled with the black spirits, and then became a monster. He's afraid of what's going to happen to them now that they've escaped the demon. He apologizes for having persuaded the boy to come with him, and he promises to reward him for his help