We live on the nexus of an infinite number of universes. Everyone who can access this network is connected to it. We get memories of our other lives lived in those other universes. Sometimes we get more than just memories. Sometimes there are other people from our exact other universe, sometimes not.
This is why I offered you condolences when you first appeared on the network. We all know what's going to happen to the new people.
And no, that's not what I said about the supernatural powers in my universe. I said it can warp the person using it.