The secret of Kero Kero the frog is that he can't swim. This is a reader-participation picture book that shares that secret with the readers, and they can have fun thinking together about how he can learn to swim! - Title: It's a Super Secret! - Text: Ana Kang - Illustrations: Christopher Weyant - Translation: Ryo Kinosaka - Publisher: Holp Shuppan Co., Ltd. Thank you for viewing. As shown in the third image, the cover has small spots and some slight warping, but the main body is relatively clean with no stains or folds. I used it twice to read aloud, turning the pages as an adult. Please understand that this is a used item before purchasing. Please note that I may change the shipping method from Rakuraku Mercari Bin to Yu-Yu Mercari Bin.