Just got this book and I’m starting to think I'm reading a different book than all the reviewers. Seems like Z writing at best to me. Nona is an interesting character at times and a terrible anime like character in others. There is a horrible amount of repetition in the book in terms of X shows up, X happens, few chapters later X shows up (different character) X happens (pretty much exact same outcome). There are large chunks of chapters that seem like wasted space where he describes a mundane task just for a girl to say "I don't like her" or something.
If you're into stuff like this, you can read the full review.