A coloring book that uses Koyoharu Gotouge's original illustrations from Demon Slayer: Kimetsu no Yaiba. At the time of release, it was the first coloring book project to use these illustrations, published as two volumes, -Kurenai- and -Ao-.
Each volume has more than 30 pictures to color, based on illustrations from the manga. Some pages are perforated and can be removed.