User blog comment:Jopjopjop/Volume 19 Spoilers/@comment-93.105.244.29-20150316101738/@comment-25032153-20150319124219

well most religions have the dragon as the ops of that religion that would have given the Author his idea given that they have said in the series given that most religions have a dragon slayer weapon in their religion so that is what they need to counter the top class beings like the evil dragons and the dragon kings.