A polar bear who lost his underwear discovers a variety of different styles of underwear. Readers can view the next pair of underwear through holes in the pages, and then when they turn the pages, they can see who the owner of the underwear is. The book was created based on the novel idea of putting an underwear-shaped belly band on a book.
![Thumbnail of Shirokuma no pantsu [Polar bear's underwear]](../../img/books/img_121.jpg)