Kodomo Challenge Step (for 4-5 year olds) Brand new, unused Set of 5 picture books August, September, October, November 2019 - Unused Only August and September were used, so there are some folds and stains. December 2023 - Unused First Clock Picture Book Clock Poster Some covers have stains, so please refrain from purchasing if you are sensitive to this. I have other items for sale too!