I spy a Fibonacci sequence

It's been a while since my last post and that's because of other projects I've got going on that are becoming quite exciting. But I decided to take a break away from them and I found something worthy enough to make me take some time to post here again.

As I am happily reading (or at least looking) through my fancy Dengeki G's Festival Vol. 20 magazine which covers August's new upcoming game 穢翼のユースティア (Aiyoku no Eustia), I first notice something other than the wonderful illustrations:

I first notice the layout of the spreads, particularly, the sizes of the image boxes that they use within the spreads. At first glance, I say "Hey, that kind of looks phi-ish." jokingly because I know most of the time many designers don't think about phi as much as I would and it just happens to appear on designs. But then I get really curious and I bust out the good ol' ruler. To my surprise, it actually is a Fibonacci design! Behold: 

The width of the spread is 19 inches, which is unrelated to the Fibonacci design but I'm just saying that for reference of the actual spread size. The image boxes together on the spreads measure 13 inches roughly (as the character portrait covers the left edge). The width of the larger image box that goes over the spine measures 8 inches and the smaller image box located on the recto of the spread measures 5 inches exactly.

Then I look at the numbers and think: 13...8...5... I've seen this before. And indeed I have as they are numbers of the Fibonacci sequence which relates to phi. Pretty neat!

Now, I can't be sure if the designers thought about the Fibonacci sequence (or phi) when designing these spreads or if they care, but I certainly care because I thought the spreads looked nice in both design and of course illustration. That and I'm a math nerd...