注意書きにはなんと.......
The advisory sentence says....
[Please read this book after take off the bear's underpants]

何事かと思って買いましたが、ただ単に赤いパンツが帯としてあるだけでした。
I was surprised but found shortly that the book is just bound with the red underpants-shaped band.

内容は非常に楽しく、刺激的でした。　一生大事にしたいと思います。
The book is interesting and exciting, and I would like to recommend this book to you if you are looking for something interesting.