Book 4 FINALLY came in at the library after months of being on hold. Yay! That being said, I kind of hope this is Kawaguchi's last installment in this series. As much as I liked books one and two, book three and now four have fallen somewhat flat for me. The concepts behind the stories are still well and good, but something about the writing and the timing just seems off to me. ⭐⭐⭐ + 1/2 ⭐