User blog comment:IamJakuhoRaikoben/Chapter 360: The White Inheritance, Review./@comment-2214433-20131115125846/@comment-2214433-20131115151303

That's boring. I actually hope they were humans turned into demons by E.N.D. for various reasons. That would also explain why Silver was a Devil Slayer, it would be intriguing to know what caused him to switch sides and also the circumstances of other Demon Gates.