Not all novels had to have a protagonist in every chapter. For example," Science Fictions " and " There Must Be a Lich King " were mainly short stories. Each chapter was an independent story without a continuous or fixed protagonist. Other novels had fixed protagonists, but they did not have to appear in every chapter. For example, in " Full-time Mage: The Twelve Guardians ", the twelve guardians only served as the background of the main character to strengthen the country's strength. The early content even introduced the process of the main character understanding this world, rather than directly showing the main character.