This is an 8-book series of the Kaiketsu Zorori books, fun picture books for children. - Series Name: Kaiketsu Zorori - Author: Yutaka Hara - Number of Volumes: 8 total - Content: Children's picture books - Color: Multicolor - Size: Standard picture book size Thank you for looking. Please understand that these are used items that have been used by a child. Some do not have covers.