Japanese Language, Arithmetic, Science, Social Studies, with answer keys and explanations. Original materials. There is pencil writing. (Especially in Arithmetic.) Please be aware that only the name will be erased, and the writing inside the booklets and answer keys will be left as is. No pets, no smoking. Returns are not accepted to prevent duplication. These items were actually used by a child, so please understand and consider purchasing. #SapiX #sapix