User blog comment:Natsu11/Zeref and Natsu?/@comment-174.99.74.12-20130704030400/@comment-1359322-20130704031643

First who the hell is serf. Second all your theory points to Mavis, Layla, Celestial Spirit, Gildarts, Lumen Histoire and the movie but none on Natsu and Zeref (well one part did).