Piggy found a magical candy shop in the forest. The shop owner Mr. Raccoon (Tanuki) offered Piggy some of his special candy, and then he suddenly transforms into... In Japanese. Annotation copyright Tsai Fong Books, Inc. Distributed by Tsai Fong Books, Inc.
(Source: Amazon)
The book is fully written in hiragana with spaces between the words.
You can read it for free by watching a read aloud on YouTube: https://youtu.be/5KJGNz05KZY?si=y_9Zru1OGzP1aS2J