The origami included inside is not used. It has been stored at home, so there is some aging, but it should be readable without any problems. - Title: Fun Kirigami BOOK Happy Book of Kirigami - ISBN: 978-4-87303-668-7 - Price: 1200 yen - Contents: Includes original design origami, and the folding instructions are written in both Japanese and English, so even those from overseas can understand, and it can also be used for simple English study.