Question: What 2001 book written by British author J. K. Rowling about the magical creatures in the Harry Potter universe, which are a colourful aspect of the fictional wizarding world?
Sentence (from "Fictional universe of Harry Potter"): The plot of the series is set in 1990s Britain, but in a veiled and separate shadow society wherein magic is commonly used and practiced, and those who can use it live in self-enforced seclusion, hiding their abilities from the rest of the world.
Relevant evidence: No