User blog comment:Rjwstar/MGQ world`s various untold informations - Torotoro blog Q&A(2)/@comment-25707465-20160127192813/@comment-26095998-20160128004652

If you refering Ranael&Nagael of parallel universe,  I think they`re just some kind of hidden event(which implies that the angels are the culprits who devastated that world), so there`s no meaning to think too deeply about it.

Plus, about the angels of Luka(player)`s world, an angel NPC in Enrika(after you talked with the elf in Micaela`s house) says that after the great disaster, the density of holy energy increased significantly so that the objects of the lower world can touch the angels.