Benesse Kodomo Challenge Baby Set of 4 picture books: ① Nenne Nenne (Sleepy Sleepy) ② Konnichiwa (Hello) ③ Mi-chan Iiko Iiko (Mi-chan Good Good) ④ Kotori no Pippi (Pippi the Little Bird) They have interactive elements and are cute. One child has read them, and there are no noticeable stains, but they have been stored at home, so please consider them if you don't mind minor imperfections. Thank you.