User blog comment:PUNCHURPREGNANT/Gray and Silver Predictions/@comment-202.81.30.16-20140627110321/@comment-24339224-20140629231017

at the first part, Dragon Slayers were taught by dragons. Therefor, dragons use Dragon Slaying magic themselves, or humans can use dragon's magic, the only thing that can harm them, and since they aren't dragons, they are called slayers. It could be a similar case, where Silver/Deliora is basically the dragon of demon slaying. I know he wouldn't be called "Ice Demon SLAYER" and that the logic is kind of shaky, but I do have a question about that. Isn't it called "DEVIL Slayer Magic/Curse", devil, not demon?