The official art book of "Master Detective Archives Rain Code" is packed with valuable illustrations. Illustrations of characters and stage backgrounds that appear in "Master Detective Archives Rain Code" are released all at once. In addition to impressive illustrations such as packages and key visuals, we also feature facial expression patterns of characters, setting images, and initial design proposals. Also, the illustrations related to downloadable content and spoilers that get to the heart of the story are perfect. It is a must-see for fans, including event scenes and unreleased setting images. The cover of this book is a new drawing by Rui Komatsuzaki, who was in charge of the design of the work!