Kimetsu no Yaiba Paint Book: Indigo

Kimetsu no Yaiba Paint Book: Indigo (『の』 --) is an official coloring book related to the Kimetsu no Yaiba manga. It was released alongside Kimetsu no Yaiba Paint Book: Orange.

Overview
The coloring book contains 37 outlines of art from the Kimetsu no Yaiba manga, including promotional pieces, chibi drawings, and manga panels with text included. Most of the art included in Paint Book: Indigo centers around the Entertainment District arc. The inside of the book's dust cover contains a full-color collage of the artwork outlined within the book.