This is a set of study guides for 2023 and 2024, covering Japanese language, science, and social studies. I purchased these at a cram school. I kept them at home and hardly used them. I believe there are no markings, but I apologize if I missed anything. I think these books can still be used for studying. I would appreciate it if you understand that these are used books. - Title: Kore Dake wa Oboeyo 2023 (Let's Memorize This Much 2023) - For 2nd Year Junior High School Students - Title: Kore Dake wa Oboeyo 2024 (Let's Memorize This Much 2024) - For 3rd Year Junior High School Students - Contents: Japanese Language, Science, Social Studies - Design: Green and blue cover design Thank you for looking.