"The Mysteries of the Body: Why? How?" Tatsuo Sakai Price: ¥1100 Others Mysteries of School, Mysteries of Life, Fun Proverbs Set of 4 books My grandchild received these from their grandmother, but apparently they already read them from the school library, so they've only been flipped through. They are relatively clean, but please refrain from purchasing if you are looking for perfection, as they have been stored at home.