There wasn't a single line of dialogue in this latest chapter, and yet it was one of the most enjoyable chapters of the entire series. It had me laughing.
Going back to the previous chapter and END being Etherious Natsu Dragneel... Zeref has stated that Natsu will be the one to finally defeat and kill him, and Mard Geer had said that the demons of tartaros were created for the sole purpose of killing Zeref. So, it sounds like Natsu is actually a demon created by Zeref, he just hasn't awakened his demon powers yet. If I recall correctly, I believe Natsu has no memory of his real parents or of his childhood prior to meeting Igneel?