Available items are new and used. "Memory of Story 5 (Basic)" and "Law of Change 26 (Advanced)" have been cut. Other used items have some stains, but those purchased new are in good condition. A drill set for developing logical thinking. - Language: Japanese - Target age: Preschoolers and Elementary school students - Format: Drill - Theme: Logical thinking, cognitive ability - Number of pages: Unknown for each booklet If you are not concerned about the condition, please consider purchasing. I am thinking of selling all 11 books for 7000 yen. Individual books are 800 yen each. Thank you for looking.