A set of picture books from the Experimental Showdown series, with fun content themed around science experiments. - Series: Experimental Showdown Series - Volumes: 1, 2, 6, 7, 8, 9, 12, 33 - Titles: Acid-Base Showdown, Power Showdown, Environmental Showdown, Human Body Showdown Part 1, Part 2, Weather Showdown, Air Showdown, Virus and Immunity Showdown Not sold separately. [Product Condition] - Used item, so there may be some sun damage or wear that is not visible in the photos, but there are no problems with reading. - Please understand that this is a used item before purchasing. - Everything in the images is included. [Packaging] - After a simple cleaning, the items will be packaged in a basic manner. [Shipping] - Will be shipped within 2-3 days of purchase via Yu-Yu Mercari or Raku-Raku Mercari.