Still catching up on some missed posts but wanted to hop in and offer another piece of trivia that might support the idea that Ink has been working towards this plan prior to the actual outbreak.

In Chapter 1, part 1 the zombies are described as being scarred and bruised. If it were only random people being attacked on the spot, it seems unlikely that they'd all be described as scarred given the time required for scars to form. Pardon the for a moment but hear me out. What if a faction were working towards the apocalypse and managed to turn a bunch of test subjects to carry the infection to the people in the major centers? If this were the case, it could explain how so many areas were hit at once plus it would account for the scars on the initial zombies. If this were a pre-planned event and Ink was a collaborator, the tattoos could have been part of the initial planning and have significance from that regard. Who knows, it could be a bunch of nihilists that got together and decided enough was enough.