I used copies of everything, so I can provide them to you in pristine condition. The set includes all four books: ① Problem Set ② Study Point Explanation Book ③ Summary Notes ④ Answer Key. Please use them to support your school assignments. Thank you for looking. A study guide with study points, including detailed explanations of Japanese design. - Title: Modern Japanese Language General Exercises - Publisher: Iroha Publishing - Content: Detailed explanations of Japanese design - Number of pages: Text and illustrations spanning multiple pages - Language: Japanese - Special Features: Includes study points Thank you for looking.