The demon tells Zhanggong that he has come to save him, even though he knows he is a demon. He explains that he is the son of the demon king, and that his father wants him to be the queen of the kingdom. The two brothers are not strong enough to rule, so the demon's father lets him inherit the throne. Since then, he says, he has lost his freedom. When he heard about the spread of light-attribute magic in the east, his father asked him to go investigate the situation, and learn about human beings. After coming to the city, he discovered that there were very few people who studied light attribute magic, but he hasn't sent back the news for some time because he doesn't want the war to happen. Later, he asked his father to assassinate Kezha, and launch an attack on humans, but the old man protected him. He says that he would rather die in the hands of the man who saved him, rather than live in his heart. The old man, he tells the demon, is the one who protected him, and he asks the demon to go back to the clan with him. The demon says that maybe the loss of this time will stop his father's ambitious ambitions. He asks the old master to come back to him.