I'd say a repurposed book.

It's a art piece that has been changed to another type of art.

Book -> performance art

Although since inside is a written story, I'd argue it's still a a book, unless it leads to further clues then it becomes performance art.

A good example of a fake book is a book made of plastic which is then used in ikea or has a hidden void.

A hollowed out book does have a hidden void. I'm a pedant too, but I try to avoid contradicting myself. Your assertion that the contents constitute a written story is unsupportable, given the singular absence of declarative sentences or anything resembling a narrative.

Picture books are books. The words and pictures inside invoke emotions and a story. As the writer of the blog shows.

I guess I meant more written words, than a story.

But it does seem to follow onto some sort of 'club'

Either way, to me it's great art.

Cool story bro.

Not to be confused with a Mock Book.