​【Please Read Before Purchasing】 ・This is the 2022 edition. Please confirm the year in the photos before purchasing. ・Please be aware of minor scratches, etc., due to storage at school or carrying around. ・We cannot sell items individually. We appreciate those who can purchase the set. ・We will take waterproof measures and ship promptly. ​【Product Features】 ​Condition: Almost new. There are no writings at all. ​Contents: A set of "Problem Edition" + "Answer and Explanation Edition" for Mathematics, English, and Japanese. ​Overwhelming amount of explanation: As expected from Z-kai, the answer edition is thicker than the problem edition, and it is structured to improve your skills through self-study. ​Short-term intensive: With "5-day completion" and "6-day completion" curriculums, you can efficiently review and develop your learning. ​【Seller's Recommended Points】 Ideal for 3rd-year junior high school students and high school students considering taking entrance exams for difficult schools. The explanations are very detailed, so you can develop the ability to handle difficult problems by reading them carefully. Since there are no writings, you can practice as if you were in the real exam! ​▼ Search Keywords Z-kai Z-kai Advanced Training STAGE3 Stage 3 2022 Edition Mathematics English Japanese 3-subject set Problem book Past questions Mock exam preparation University entrance exam Junior high school integrated education 3rd year of junior high school 1st year of high school Difficult school Entrance exam preparation 5-day completion 6-day completion With answer and explanation No writing Near new condition Beautiful product Self-study Practice Sundai Mock Exam High level Practical exercise Z-KAI Teaching materials Study guide Sokeijo University (Keio, Waseda, Sophia, Tokyo University of Science) Old Imperial Universities National and public university entrance exams Descriptive writing measures