Adventure Survival series, also enjoyable as an illustration collection. - Series Name: Adventure Survival - Number of Volumes: Complete set - Illustration Collection: Illustration Collection - Volumes: 1, 2, 3 Please refrain from purchasing if you are concerned about minor color fading due to home storage. I purchased each book for 1,200 yen. I think it's perfect for children who like science♪ Thank you for looking.