A set of 4 books from the "10-Minute Read" series. "10-Minute Stories for First Graders" "10-Minute Stories for Second Graders" "10-Minute Funny Stories for Second Graders" "10-Minute Biographies for First Graders" Gakken Please check the condition in the photos. There are some folds on the covers, but the inside is clean. As shown in the fourth photo, there is a mark where a sticker was removed. Thank you!