You don't think... that this could be the distant future of It's My Life, do you? After some massive disaster?
(This may or may not be spoiler for those reading It's My Life)
Maybe triggered by whatever that "Noah" was trying to do at all the ruins
@Epicredeemer huh, I was actually thinking the opposite. That this world might be some sort of forgotten past. Regressing until it eventually becomes as it is in It's my Life.