User blog comment:Sargenttacos115/Natsu and Gajeel age Theory/@comment-108.250.20.180-20131117185004/@comment-108.250.20.180-20131118194508

Future Levy came from the same timeline as future Lucy and future Rogue and there is only one dragon according to future Rogue and that's Acnologia. That's why he brought dragons from 400 years into the past to the present. It was his act that was supposed to trigger the future of Lucy and Levy and Rogue's timeline. He just failed to bring as many dragons as their timeline initially had. There is no confusing the 10,000 dragon invasion and the Acnologia future as they are both one in the same. Rogue states quite clearly "Remember when I told you dragons would rule the world 7 years from now? Well, those dragons didn't come from this gate. In fact, it's not even dragons plural. Acnologia is the lone ruler of this world." That's the future that all three share. My theory doesn't even rely so heavily on it anyway. My theory is that Gajeel is turned 400 years in the past which at some point him and Natsu and most likely Wendy will travel too. They'll be at the height of the dragon wars. They'll all be the dragon slayers the legends are based on. They'll run into past Zeref who will first meet Natsu at that time. Since this Natsu is from sometime in the near future it makes sense he was more powerful than the Natsu on Tenrou Island. I even have a theory how they get home. Lumen Histoire, bright history, is actually a device akin to Fairy Shield that protects both Wendy and Natsu (and whomever else they decide to include in this) to the future by stopping time for them until they can return shortly after they've left. Gajeel is somehow left behind to face the dragons and fights for his life. He ends up slaying many of them and becoming Acnologia. Hell, future Levy can even misinterpret the transport of Wendy, Natsu, and Gajeel to the past by some kind of magic used by Acnologia and their collliding which transports them to the past as them dying. Acnologia is going on a rampage and Levy is in the guild hall while writing the letter to Lucy having just witnessed what they assumed to be the death of Natsu (died...) Wendy (died...) (and, and) Gajeel (my dear..) Why assume she's referring to numerous members of the guild. She could quite literally be referring to the three dragon slayers only. Thus, Natsu and Wendy return via Lumens Histoire which Gildarts or Makarov unleash in the face of Acnologia's onslaught and Gajeel returns the long way round. As Acnologia himself. You can even draw the parallel that Rogue has always wanted to be like Gajeel and surpass him. First as a dragon slayer and then as Acnologia himself.