Purchased for 700,000 yen in 2020 First Manual [Key Points & Problems] Set & Instruction Manual (Answers & Explanations) This is a high school entrance exam preparation material, but it can also be used for school regular tests. Its excellent content has been highly praised and has received good reviews from examinees. The key point sheets and problem sheets for the five subjects are filed separately. The key point sheets have easy-to-understand explanations and are easy to grasp as they only contain the key points. The problem sheets are designed to help you retain and confirm your learning. They are also useful for regular test preparation. The price has been reduced because there is no mathematics instruction manual. This material contains the learning content of the three years of junior high school, and if you don't write on the material, you can use it repeatedly. I was careful to use it cleanly, and I couldn't find any writing inside when I checked, but there may be oversights. There is almost no dirt. The files are slightly deteriorated, but they are in good enough condition to be used.