The title of the novel The Last Guardian usually has different meanings, depending on the author's writing intention and the story background. The following are some possible meanings: 1. emphasize the importance of protection. The story might be about a character who made great efforts and sacrifices to protect an important person or property. This kind of theme can encourage readers to care about and protect the people and environment around them. 2. It represents the power of protection. The story might be about how the power of protection inspires and influences the growth and development of characters. This kind of theme can encourage readers to believe that they have the ability to protect what they want to protect. 3. Exploring human nature and morality. The story might be about the human nature and morality of the characters in the face of protection and sacrifice. This kind of theme can guide readers to think about human nature and moral issues and help them better understand the behavior and decisions of the characters. 4. To express the meaning of protection. The story might describe the meaning and value of guarding and how the characters realize their value and mission through guarding. This kind of theme could encourage readers to think about the meaning and value of Guarding and help them better understand the actions and decisions of the characters. The meaning of the novel's title, The Last Guardian, depended on the author's intention and the background of the story. The readers could read the novel to understand the specific meaning and gain more enlightenment and insight from it.