Thank you for viewing. For those aiming for Koyo Gakuin Junior High School. Recommended to do once a day during winter break! I purchased this unused, but I only solved 4 out of 13 sessions. The remaining 9 sessions are unused, and you can use the questions, answer sheets, and answer explanations as they are. I will also include the questions and answer explanations for the 4 used sessions, so please make use of them.