These are the picture books that arrived monthly when I subscribed to Kodomo Challenge Baby. * Kotori no Pippi (9 months old) Features a page-turning mechanism on each page. * Konnichiwa (10 months old) Features a mechanism where you can insert your finger and play. * Mii-chan Iiko Iiko (1 year old) Features a mechanism where you can stroke Mii-chan's fluffy head and tummy. * Matte Matte Korokoro (1 year 1 month old) Features pop-up and opening mechanisms. This is a set of 4 books. My child was very engaged with these books when they were 0-2 years old, and they read them with great enthusiasm! Thanks to these picture books, they still love picture books today. I think they can still be used, so if anyone is looking for them, please consider them. I mainly used them for reading aloud, so the condition is good. There are no major tears, scribbles, or names written in them, but there are some minor scratches. I have uploaded images of any areas of concern. Please refrain from purchasing if you are sensitive to the condition, as they have been used by a child. Kodomo Challenge Baby Benesse Benesse Baby Picture Books 0-year-old 1-year-old Picture Books