A picture book series for young children that explains questions about nature and living things. - Series Name: Why Why? - Number of Volumes: 12 volumes in total - Target Age: For young children - Content: Explains questions about nature and living things Thank you for looking. As shown in photo 6, the cut-out section has been cut out, but there are no other markings, and I personally think it's in good condition. This is a science picture book for young children, and I think children who love nature will enjoy it very much.