I am selling these items because my child only flipped through them and didn't use them. There are no markings. ⭐ Challenge 1st Grade: Korasho's Mystery Solving Casebook ⭐ Imitation Reading Book ⭐ Challenge 2nd Grade: Time and Hour Detective Book ⭐ Challenge 2nd Grade: Japanese and Math Exciting Thinking Book ⭐ Korasho's Game Craft Book ⭐ Challenge 2nd Grade: Number/Figure/Word Peel-Off Thinking Book ⭐ Challenge 2nd Grade: Minions Spring Japanese/Math Review Cards (Unopened) This is a set of 7 items. ⭐ There are minor scratches and scuffs on the covers. There are some page-turning wrinkles, but since they haven't been read much, they are in good condition. ⭐ The books will be placed together in a bag, wrapped in bubble wrap, and then shipped. ⭐ Please consider this item, understanding that it is a used book and has been stored at home (*ˊᵕˋ*)