Monster Girl Encyclopedia Stories: Diary Of The Age of Monster Love II (魔物娘図鑑物語: 魔の色時代のダイアリー2) is a three part novella in the Monster Girl Encyclopedia series. Unlike the Encyclopedia itself or the World Guides, this book is a three part story featuring a gyoubu danuki, a selkie, and a roper. As with Diary I, the story is authored by Strange with art contributions from Kenkou Cross.
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.