This is a set of 4 Usamaru illustration books. The first book has a small stain on the cover (see the second image). The other 3 books are in good condition without any stains. I think all the books are clean as I've only flipped through them once, but they have been stored at home. All 4 books come with the bonus stickers. Usamaru Usamaru to Issho (Usamaru and Together) Mainichi Usamaru (Usamaru Everyday) Gokigen Usamaru (Happy Usamaru)