Matthew Meyer beautifully illustrates the creatures in this book and shares thorough research about their origin and backstory. I had four main issues:
1.) Formatting: Only a Kindle version is available. Print should come first. Logistically, in the Kindle version, illustrations follow the descriptions/stories, which seems backwards. As I read about a certain monster or phenomenon, an image begins to form in my mind of how the creature should look, or how the story unfolds, but then when an illustration confronts and contradicts how I envisioned it, the entry loses familiarity and lasting memorability. Place the pictures first, or directly under the name of each monster, so the images can form as the reader begins an entry.
2.) Selection: Not all of the entries describe monsters, characters, or yokai. I bought this book to learn about creatures, not read an anthology of folklore about foxes, superstitions, curses, and general inchoate categories. Stick to simple documentation of individual creatures, and tell us what they can do! The divergences are interesting but ultimately need to tie back to specific, well-known creatures with verifiable imagery. This veers too far from a bestiary or creature compendium.
3.) Organization: I found it hard to look up creatures by any quick reference or logic. It isn't divided into land/sea/air or nature/civilization like previous entries, nor is the ordering alphabetical. That makes it hard to group what I read in my head, and I often found myself ingesting one entry and forgetting it by the next, because there was no meaningful or obvious connection.
4.) Data Dump: The author researched the origins, habitats, and backstories quite thoroughly. I would have liked to know more about what each yokai or fox could do, in terms of magical powers, instead of mere suggestions or vague terms like "shapeshifting." In a true field reference, zukan or encyclopedia, you also learn about abilities and skills. Instead of data-dumping research about a backstory or folktale, the author could have better curated and culled the entries to include the most essential eccentricities of each creature -- what sets it apart? Backstories are interesting, but I don't need to hear what another book tells me; I just need to identify the yokai by what it uniquely can do.