User blog comment:B214/Question and Answers/@comment-24098614-20131118015637/@comment-9339850-20131118015851

We DONT know, vol 16 isnt even completely translated yet, and we dont even know if that will be explained in that volume. For all we know he could of had some special Koolaid and thats how he got it, he's a Super Devil, so anything is damn near possible