User blog comment:Dispelling Mage/Chapter: Fairy Heart (451) - Review/@comment-5303512-20150908064337/@comment-25395791-20150908065534

Something which just crossed my mind right now is that Natsu's Demon form could make him become a Dragon so maybe a mix of the 2 possibilities? :o But I'm certain that it will have to do something with E.N.D.'s awakening. In "Memoirs" (Don't know the number of the chapter), Zeref mentioned that he'll meet with Natsu soon, possibly implying in revealing his true form in the future.