Well, in chapter 28 of the novel, the hero discovers a hidden secret that changes everything. There's also an intense battle scene and some character development.
In chapter 21, the story progresses significantly. The hero discovers a hidden power and the villains become more menacing. There's also a hint of a larger conspiracy.
It depends on your perspective. Some might think so, while others might have doubts based on various factors like the hero's actions and character development.
Sorry, I don't know off the top of my head. But you could try looking through online discussions or the official website of the novel for the correct chapter.