@lobsterboy Thanks for the correction. I am not really good with words 😅
But still, there is no sign of any survivor and zombie, which is very questionable. And the point that you mentioned, about the two soldiers, it was a movie. So, there could be a chance that, he might have seen it in the past before, like in his childhood.
The footprint however, is still a mystery for my assumption. The world being abandoned with only two of them is very suspicious.
While writing/typing this, I thought of another theory that, this could possibility be an experiment with the girl and him. Like how special she is, to still have human emotions.
But, I would just end this here with stating that I was only 80% sure, so there is still a chance of this assumption being wrong.
And I am just working out too much from just 5 chapters so far. We will see, what's the case is all about in future chapters (hopefully). But I am sure it's not going to be a good reason behind all this.