Dara tried very hard to understand what Hyeri was explaining. All he understood was that all the universes were very different from one other. Apart from human populated earth, there was heaven-like universe where everything was good.
To balance it, there was the place where they were right now. An isolated place where the sun came out for 10 minutes. A place where the worst type of offenders was sent to.
Apart from these three, there was a mystical creature world where every species that disappeared from the rest of the universes existed along with many creatures that he thought existence in only in fantasies.
There was a complete opposite of earth to balance it, where the laws of nature were reversed. According to Hyeri, it was better than the original human planet.
Earth walkers were specifically called humans because of their significance and contribution, the best of all. Although all of them homo sapiens.