This is a set of 4 Kodomo Challenge picture books. "Mii-chan Iiko Iiko" has a fluffy texture inside the book, allowing you to pet the cat illustration. "Ohayo Ohayo" has a mechanism where you can insert your finger from the back to move the mouse. "Matte Matte Korokoro" has a mechanism that allows you to move part of the picture book. "Kotori no Pippi" is a picture book where you can play by lifting up the cloth. Overall, there is a sense of use, so please check the photos and understand that these are used items. *Will be shipped in simple packaging.