True.It also gives readers a chance to see what the author might think is going in a character’s head
It helps to give context to some scenes that didn’t quite make sense when shown in the game.
In KH3, for instance, a lot of people were confused by Riku’s extreme reaction to Mickey saying that “Aqua is like Sora”. The novel clarifies that his reaction was because he interpreted it to mean “Aqua is a person who always has her head in the clouds, just like Sora”.