What if Natsu always knew he was E.N.D ?
What if he knew he was Zeref's brother ?
What if he was actually working for Alvarez?
What if he was more powerful than even Zeref himself ?
What if he had killed Igneel a long time ago, after he had succesfully learned the fire dragon slayer magic ?
What if he lost all his memories after his battle against Igneel ?
With all that, what happens...