Newly Revised Edition, 32nd Printing Issued Set of 23 books: Volumes 1-21 and Supplements 1-2 There is no yellowing, so I believe you can read them with pleasure. These are manga books that are also familiar from "Biri Gal" and are educational for history. They seem to be used for exam preparation for junior high and high school students, and I think children who are interested can study enjoyably. All volumes will be shipped in a box, wrapped in bubble wrap. As these are stored at home, please refrain from purchasing if you are concerned about minor details.