12-book set from April 2024 to March 2025 Kodomo Challenge Jump For 5- and 6-year-olds Born between April 2, 2018 and April 1, 2019 Includes the supplements inside. Some stickers remain. There are no bent corners or noticeable stains. No names have been written. March 2025 issue has a slight fold on the back (please refer to the photo). It may be helpful as there is a story about entering elementary school. Thank you for looking.