A 15-volume set for children with a theme of science and inventions. - Series Name: Invention Showdown Series - Number of Volumes: Complete 15-volume set - Condition: Excellent - Contents: Themes related to science and inventions - Target Age: For children Purchase Price: ¥19,800 Thank you for viewing. This item is in excellent condition, having been viewed only a few times. ※ This item is not sold individually. Please understand.