These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
YMMV: The City of Dreaming Books
Contested Sequel: The follow-up, The Labyrinth of Dreaming Books from 2011 (English translation in 2012) has received mixed reactions from fans. Some think it's good, others find it disappointing.
What Do You Mean, It's Not for Kids?: So, an illustrated novel in which a talking dinosaur sets off to find the world's greatest writer, and much oddity and humor ensue. The problem is, an awful lot of fairly graphic death, horror, and madness are mixed in with the oddity and humor.