True enough "otherworldly" doesn't have to mean literally that they are from another world, although it seems a strange word choice for a magical researcher to use when other worlds do actually exist if he did not mean the literal definition. "Bind and control" though definitely suggests that the fairies exist independently of the scholars--that they are not entities that are created by arcanists like Carbuncle or the egis. Huh, now I want to go hunt down all of the flavor text for anything with faerie in the name to see if there is anything we've missed.