Koguma-kai Hitori Dekitokkun Series 7-Book Set - Titles: Hitori Dekitokkun 5, 27, 28, 30, 65, 74, 84 Please check the photos for the titles. - Colors: Pink, Orange, Green, Blue, Yellow - Number of books: 7 total - Target age: Preschoolers, 4 years old and up - Publisher: Fukuinkan Shoten Because the books were copied for use, there is no writing inside. However, there are signs of use on the exterior, such as pencil marks. Please consider this before purchasing. Thank you for looking.