▼Limited Time Offer Until 12/15▼ ¥499 → ¥450 This item was used at school. It seems the answer sheet was removed and used separately. There are no markings. (Please forgive any oversight) The front and back covers have scratches, etc. There is a name written on the back, which will be covered. As a bonus, I will include an attachment from a drill used at home. The red and green cards can be written on repeatedly with a whiteboard marker.