The most important thing when naming a novel is novelty, it depends on which style you like. For example, if you want to call it concisely like disaster, homeland, of course it is better to highlight the tragic meaning and make it more attractive, such as the last guardian, the end of the world, and the century of danger. Don't be overly sensational and inconsistent with the meaning of the text. The main thing is to see what the article highlights. After all, I haven’t read the novel, so it’s up to you to make up your mind. Hope this helps.