User blog comment:IamJakuhoRaikoben/Chapter 395: Tartarus Arc - Part 5: Extreme Pain, Review./@comment-49.150.146.20-20140809165321

Since Silver is not actually a Demon but is a member of the Nine Demon Gates, I wonder what happened to the 9th Demon? He himself stated that ALL nine members of the Nine Demon Gates are Demons from the Books of Zeref, yet he himself is human.