This is a set of picture books from the Douwakan Book Club, which I joined for my son, along with sound books and other books such as a Miki House vehicle encyclopedia that I purchased separately. I don't remember exactly, but the second photo shows the sound books and other books besides the Book Club books, such as the first encyclopedia. These were read often and show some wear. Sound function has been confirmed. The Douwakan books were used with care, so I think there are no noticeable stains or tears. For those who understand that these are used children's items, thank you. Thank you for looking.