Why box in creativity basically as the ability to mimic someone else who is creative? Why not choose something that better matches the definition of creativity (the ability to make new things, think of original ideas, or show imagination that is novel, useful, or pleasing)?
And even then, I am assuming the premise that the original novels are good and creative, especially chapter 2. Most novels are not very creative.
If it could make 5 different versions of chapter 2, all with different directions for the story, and all with novel and interesting developments, wouldn’t that be a better definition of creativity than “can it read chapter 1 and be able to copy style and deduce/predict what the author is going to do in chapter 2”?
And also, that’s only a subset of creativity (storytelling). I’ve met plenty of people who are terrible at writing and storytelling but can come up with the most impressive and novel solutions to a practical problem instantly.
Final thought: I have been following the development in the anime AI generation scene for a while now. It’s not even close to anything anyone would call creative or even OK quality. But it’s also massively impressive that it’s moving in that direction really fast. And if you watch enough, you are going to start to see some truly creative sparks. And some of the mainstream stuff that gets created and labeled as creative… really... How many isekai series with the same story have humans not made already?