This is a set of the official textbook and problem book for the Intellectual Property Examination Level 3. ① Intellectual Property Examination Level 3 Official Textbook (edited by the Intellectual Property Education Association) Price: 3300 yen (tax included) ② Intellectual Property Speed Problem Book (Waseda Keiei Publishing) 1540 yen (tax included) There is some writing in them, but I think it's not too noticeable. If you are concerned about this, please refrain from purchasing.