This is a book by Hayao Kawai, Professor Emeritus at Kyoto University, a clinical psychologist, and a psychotherapist. Price: 1,600 yen + tax. I vaguely recall a blogger, who was formerly a child who refused to attend school, recommending this book. This is a book I recommend to those whose families are struggling with children refusing to attend school or adults who are reclusive, as well as those studying psychology. I read this once and then stored it at home. There are no smells of used books or mold, and I believe it is in good condition. However, as it is a used item, please purchase it only if you understand that it is a used item and has been stored at home. It will be shipped via Yu-Packet Post of Yu-Yu Mercari. I will not reinforce the corners in particular, but I will put it in a plastic bag for water resistance.