Enter publishing house Eterna Cadencia with an intriguing twist about the things we took for granted in books above. What they came up with is a unique concept of a book with fading ink with the title, El Libro que no puede esperar (the book that can't wait).
Some will call it a gimmick or a silly idea. Personally I like the book. Unfortunately, If you fall into the same camp as I, you may be disappointed to find that contrary to what the video shows below, there is a lot of question as to if those books really even existed.
That aside, the idea is great, take a look.
What other ways could a story and the disappearing ink work together for a completely new experience?