Thank you for viewing. This item is a reference book for middle school math and science from Kagerou Days, which I used about 5 years ago. Both books are a bit worn, but I didn't see any other major scratches or stains. Also, this is a casual inspection, so please purchase only if you understand this. If you buy the set, the price is 2999 yen including shipping. If you buy them separately, the math book is 1555 yen including shipping, and the science book is 1777 yen including shipping.