Thank you for viewing. This is a set of 10 books, including typical problem sets and speed checks from Sanaru Yobiko, for the March 2026 entrance exams. I haven't found any writing in them, but as I am a non-professional, there may be oversights. Please be understanding. The cover of Speed Check Vol. 1 Science has water stains. They are difficult to see in the photos, but please check photos 4 and 5. This is only on the cover, and there are no water stains inside. The other books show signs of use, but I believe there are no noticeable stains or scratches. The condition is listed as "with scratches and stains" to match the Science book. Please understand that these are used items, and only purchase if you are okay with this. If you are concerned about minor details, please refrain from purchasing. Also, we will not accept offers from those who cannot communicate in Japanese (especially those outside of Japan). Please be sure to check the profile (we cannot respond to cancellations, complaints, returns, etc. after shipping...). #SanaruYobiko