As you saw from the title; This is the pokemon universe but you are the only human left. All others were made non-existent by Arceus because he saw the attitudes and events were repeating too much like they were in a(n) infinite loop of uninterestingness [Yes I just made up that word =v=]. So Arceus thought it'd be more interesting [and less bothering/annoying] this way. Good luck y'all!~