I am an orphan. No one knows that I have had a monster inside my body since childhood. Therefore, I have no children to play with or any friends since I was a child. Since the age of 18, the monster in my body has always been uncontrollably going out at night to punish evil and promote good. He plays the role of justice in the city. In the process of protecting the city, he realized that demons do not necessarily have good intentions, people do not necessarily mean good people, and there are good and bad cultivators.