User blog comment:Woohoot/Future Lucy and future Rogue timelines/@comment-200.112.146.175-20130609023856

Well, in future rogue' timeline Acnologia rules the world but he was already in the world, in future rogue's "present". Remember that the black dragon was the one who destroyed tenroujima and he didn't come from the gates, or so I think. I think that in future rogue's timeline Acnologia rules the world and no one can stop the dragon, so future rogue comes back to the grand magic games year and instigated that the gates must be opened, thus the dragons came back from the past. Since he can control the dragons, he wants to used them against Acnologia.