The picture book in the center with the black cover is "Revised New Edition: Osakana-chan's Ping-Pong Birthday" by Hido van Heenechten. This series is popular worldwide and features illustrations with vivid colors against a black background, capturing children's attention. The repetition of "Ping-Pong" is fun, and the story is about Osakana-chan's friends visiting one after another for her birthday. The other two books are also a set of three picture books from the same series, featuring the same vibrant colors and the characteristic of "Brain Development!" *Important Notes* Please be sure to check the condition in the photos and understand and agree before purchasing. *Please refrain from purchasing if you are overly concerned about details.* Cancellations, claims, and returns after a successful bid are not accepted, so please bid only if you understand and agree to these terms.