This is a set of two reference books for efficiently studying Japanese history. Author: Shunichiro Kanatani Publisher: Toshin Books Titles: "Japanese History Chronological Memorization" Price: 900 yen + tax "Japanese History B Question and Answer" Price: 980 yen + tax I purchased these at a bookstore but did not use them. I will sell them to someone who understands that they have been stored at home.