Naobun Publishing Center Exam Japanese Past Papers 2009-2018 Main Exam/Retake Exam Explanation and Answers Textbook of Explanations Three books. I looked through them, and it seems there are no markings. Answer sheets were not included. The explanation book includes classical Japanese and classical Chinese, but it doesn't seem to be included in the questions. Details are unknown. These three books are thick, so please purchase this item separately.