Review Detail of Potatowned in The Great Demon System

This is genuinely one of the worst written things I've ever read. Character personalities change on a dime or are never really fully established so they just warp to fit whatever narrative role the author needs, dialogue reads as if the author has never had a full conversation with another human being and has just pieced together dialogue from D-level movie scripts. The tone of the story is all over the place. I have a friend who's a high school English teacher and I've seen better writing from his students papers. I'm assuming the author is 14-16 years old so I guess it's not shocking that this is so bad but a lot of the problems could have been lessened if he just read more actual books and stole ideas and style from them.