This story features an alice (As seen on the cover). Despite popular belief, she is not the Queen of Hearts. The Queen of Hearts is confirmed to be a lilim, the white-haired daughters of the Demon Lord.
This book is a story by another author which Kenkou has given personal approval to by providing endorsement, artwork, and publication under the Monster Girl Encyclopedia name. This work is not a part of the primary universe canon but takes place in an alternate universe that adheres to the same rules.