A portion of a Famitsu interview with Level 5 president, Akihiro Hino...

Hino: ...The contents of the book will be slightly different in accordance with the changes we make for the console version, but it will basically be the same thing. We’re also working on incorporating different mechanics into the book itself. For example, you might need to use a special magnifying glass to reveal an image or something. So we’re examining designs along those lines as well…

Famitsu: It will also come with a magnifying glass?

Hino: Well, we’re still discussing that, but we’d like to try. The lens uses a fiberous, silk-like material, and it can reveal images. Glancing at the page, you can’t tell there’s an image there. You wouldn’t so much as think there might be something hidden there. But when you find the right spot with the magnifying glass, the picture becomes visible. It’s an incredible technology.

I really, really want this game to come stateside. Check out the full translated interview here