Thank you for viewing. This is a set of two books, perfect for children. A picture book set that explores the mysteries of a child's heart. "The Wonders of the Heart: Why? How?" "The Wonders of the Heart, Continued: Why? How?" Price: 850 yen Price: 900 yen Author: Machiko Tanaka Supervised by: Tetsuya Murayama Original Idea/Writing: Masato Ohno Publisher: Takahashi Shoten Both books show signs of use. The contents are not heavily damaged, but the covers have considerable wear. These books have been used by children. Please refrain from purchasing if you are sensitive to imperfections, as this is a casual inspection. ★If you have any questions, please feel free to comment (*^^*) ★Instant purchase is OK ♪ ★Shipping method: We plan to use Yu-Packet Post, with measures to prevent water damage. ★The shipping method will be either Rakuraku Mercari Bin or Yu-Yu Mercari Bin. Please note that this may change (*^^*) ★I also have other picture books for sale, please take a look if you'd like (^^)