These are "Kodomo Challenge Oyako Desu-Kusu-Ku" books. They cover the periods from 6 to 10 months old, and from 1 year 1 month to 1 year 2 months old, as well as a book that explains growth from 1 year old. They have only been flipped through, but there are creases from opening the books, and the cover of the 6-month issue has some scratches. The cover of the 1-year 2-month issue has some creases, and the book about growth from one year old has some minor stains. Otherwise, they are in good condition. Please refrain from purchasing if you are concerned. Instant purchase is OK, but please leave a comment after purchasing. Kodomo Challenge Baby Baby Childcare Maternity Kodomo Challenge Baby Benesse Kodomo Challenge