Thank you for viewing. This is a set of 6 books from the Science Manga Survival Series. - Night Safari Survival ①② - Dinosaur World Survival ①② - Parasite Survival ①② The books were stored on the bookshelf after my child read them. *Parasite Survival ① does not have a cover. *There are no noticeable writings or stains, but there are wrinkles and scratches. Please check the condition of the product in the photos. I believe they are still in a condition where you can enjoy reading them, but please understand that these are used items that a child has read. Thank you very much.