Instant purchase OK, ships within 24 hours. Original book: Arithmetic, Japanese Language, Answers and Explanations All writing has been erased as much as possible. Please forgive any remaining marks or unchecked areas. Stored at home, so there may be some minor stains. Please refrain from purchasing if you are looking for a perfect item. Returns are not accepted after purchase, as this item is subject to potential copying. Thank you for viewing.