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.
I'm not entirely sure as it could refer to various things. It might be a novel with a unique structure where the story is divided into four parts or sections in a special way related to the 'hero' of the story.
The manhwa 'A Broken Hero' tells the tale of a once powerful hero who has fallen from grace. He has to overcome inner demons and external obstacles to reclaim his heroic status. The story is full of action, drama, and self-discovery.
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.