Available for immediate purchase Unused This is a mathematics textbook for first-year junior high school students. It includes Sirius21 Plus and a unit review test, two books in total. Based on a casual inspection, there are no markings and no creases, so it appears to be unused. Please refrain from purchasing if you are concerned about minor details, as this item has been stored at home. Due to the low selling price, returns and claims are not accepted.