I haven't actually read the 'End of Ever After' novel specifically, but generally, it could be about the conclusion of a long - held state of 'ever after' like the end of a happily - ever - after scenario in a fairy - tale - like world. It might deal with the breakdown of an idyllic situation, perhaps due to some external force, internal conflict, or the passage of time.
Since I don't have detailed knowledge of the 'after ever after novel', it could potentially be a fantasy novel where the heroes have saved the world from an evil force and now the story is about how the world is like in the aftermath. It might explore how the different species interact now that the threat is gone, how the political structure has changed, and how the individual characters grow and adapt to this new world. There could be new challenges that arise from the very solution that saved them in the first place, and the novel could be all about that exploration.
Since I haven't read the 'after ever after novel', the main characters could be a family. After a major upheaval in their lives, like the loss of a family member or a financial disaster, they each struggle in their own way. One might be a rebellious teen trying to break free from the new constraints, while another could be a parent trying to hold the family together. And there could be other characters around them who either help or hinder their journey in this 'after' phase.
I'm not sure if "Charlie IX" refers to the same novel series because the name may refer to different works. But if you're referring to the Harry Potter series, I can answer:
The author of the Harry Potter series had changed. The novel series originally written by JK Rowling is now co-written by Daniel Radcliffe and Emma Watson.
The Water Margins had 120 chapters in total, divided into different chapters. The story after the 120th chapter was not officially published, so it could only be understood through imagination and speculation. According to the recommendations of some novel websites, we can roughly understand some of the story content after the 120 chapters:
After 120 chapters, the author Shi Nai-an-an made some changes and supplements to Water Margins. Among them, the most famous one was the last 40 chapters of Water Margins, which were also called Liangshan Heroes or Zhongyi Water Margins. The last 40 chapters mainly talked about the lives of the Liangshan Lake heroes after they were recruited and their struggles with other Liangshan Lake heroes and court officials.
In the novel, the heroes of Liangshan Lake were finally forced to surrender to the court, but they still maintained their beliefs and traditions and fought against other anti-court forces. At the end of the story, the heroes of Liangshan Lake fought together against the officials of the imperial court and finally won.
Although the plot of the novel is different from the first 40 chapters of Water Margins, it is still an important classical Chinese novel, which has a profound influence on Chinese literature and culture.