Kodomo Challenge Petit Textbook for 1-2 year olds Set of 12 books Includes advice on childcare. It also provides insights into a child's development, making it very helpful when raising your first child, and was useful when raising children aged 1 and 2. The edges of the April and March issues are slightly folded. Please purchase if you don't mind. If you have any questions, please feel free to ask. Please understand that these items are stored at home and have been inspected by an amateur.