Picture Land Shueisha 25 Volume Set

This was ordered as an ideal set for emotional education.
All the illustrations are wonderful, and I kept them hoping to look at them even as an adult.
I remember my children often opening them by themselves around ages 2-3... and up to kindergarten, immersing themselves in the books.
With these 25 volumes, I feel they helped with emotional development, numbers, alphabet, and shapes, fostering natural growth during early childhood.
In particular, the book What's Inside My Body? was difficult to explain, yet children would ask about it. This book helped my child and I think together and understand it beautifully, something I still haven't forgotten.
Additionally, the books laid flat in photos 2, 3, and 4 (and the book in photo 5) are in near-new condition. The remaining books (those before it) have been used frequently, but I believe they are still in good condition.
Contents: I quickly checked, and there appear to be no scribbles, but I apologize if I missed anything.
Thank you.