This is a set of two books by Toshiaki Masuno. "90% of Your Worries Won't Happen" (680 yen excluding tax) There is a slight scratch on the cover, but it is in good condition. "Live Without Comparing or Being Obsessed" (680 yen excluding tax) As shown in photo 3, the spine is slightly sun-faded. The inside is very clean. I purchased these books because I was going through a period of worry due to my child's strong individuality. After reading them, I realized that in this day and age, it's no use worrying, and things will work out somehow. Shipping will be via Yu-Yu Mercari Mail Yu-Packet Post. I will not reinforce the corners in particular, but I will try to reinforce them as much as possible with the way I apply the packing tape. Please understand that these are used items and purchase them only after you are fully satisfied.