As shown in photos 12-13, the cover's fold is slanted from the time of purchase, causing the folded-over part of the cover, which should fit inside, to stick out by about 1mm. After purchasing new through mail order, I stored it with a clear book cover and removed the cover for inspection. The yellowing appears whiter than it actually is in the photos. Furthermore, initial scratches and scratches from aging are difficult to capture in photos. This is a used item. I would appreciate your understanding if there are yellowing, scratches, or corner folds. We will offer a combined purchase of two books for 899 yen. We appreciate your understanding that this is a personally stored item inspected by an amateur. Thank you for your purchase.