Arceus realized that creating humanity was a mistake. First Team Aqua and Magma nearly destroyed the land and sea, then Team Glactic nearly erased existence by creating a new universe, Team Plasma then took control of the Tao trio, finally Team Flare almost wiped out all forms of life. He prepares to end humanity but before he does he needs to select two humans so if he ever decides to remake the human race again he just has to a send them down. Pokémon is owned by GAMEFREAK and Nintendo