This is a coloring book of Ukiyo-e and Japanese paintings, released by Pepin Press, a Dutch coloring book and craft book specialist.
A set of 20 postcard-sized monochrome pictures.
The sketch is drawn on high-quality acid-free drawing paper and is compatible with a variety of art materials such as pencils, crayons, pastels, felt markers, gouache, water-based inks, and liquid inks. After coloring, the original outline is almost invisible, so you can finish it with a picture like the cover.
The sheets can be torn off one by one, so after you finish coloring, you can display it in a small frame or send it as a postcard as it is.
There were other Ukiyo-e series released, but I used it and kept only this one book on my bookshelf.