A children's book that teaches how to cultivate the heart. - Title: Kokoro no Rule (Rules of the Heart) - Author: Mieko Ito - Illustrator: Shoichi Haga - ISBN: 978-4-202-155436 - Publisher: Ikeda Shoten - Theme: How to polish your heart - Target age: Elementary school students Thank you for viewing. This item has been stored at home. It has been used, but the inside is in good condition. There are no writings, but I apologize if I missed anything. *See photos Please understand that this is a used item.