Instead of writing a scene from the perspective of all of the characters involved, the author repeats the scene from each character's perspective who happened to be there. While this wouldn't be an issue if the retelling added any depth to the scene, the author oftentimes repeats the scene nearly word for word.
Additionally, the author has the characters repeat nuggets of information over and over again. A lot of times the info drops are also word for word from other places in the novel. Sometimes it will repeat after only a page or two. All of this repetition padding out the length of the book gets really old really fast and made me want to skim or just skip entire sections of the novel. Reading a light novel from a franchise I already love shouldn't be a grating chore...
The way the book is written also threw me off. The sentence/paragraph structure is basic and simplistic. Although light novels tend to have a simpler writing style than full length novels, they still manage to contain functional paragraphs, exposition, and clear progression of the plot. This had very little of that - the author jumped from point to point without fleshing out the idea they only just tried presenting, and the paragraphs don't really convey a single idea and are more so just a collection of sentences which happened to be thrown together like that.
I had really high expectations going into this light novel considering how great the anime was. However, if you really want to read the story, try the manga since it will circumvent most of the writing issues the novel presented - this light novel was a grand disappointment.
