User blog comment:Lord Zeref Dragneel/Question about the Dragon arc/@comment-25111584-20150729094226


 * In F. Lucy's timeline, the Eclipse Gate cannot be controlled and 10000 Dragons come in from the past, destroying her world.
 * She then travels back in time and manages to close the Gates in time. This is now F. Rogue's timeline. Acnologia destroys everything and rules the world 7 years later in this timeline.
 * To prevent this, F. Rogue learns Dragon Supremacy Magic and travels back in time to prevent F. Lucy from closing the Gate, which would allow the 10000 Dragons to come to the present and, thus, allow him to control them. This is now the current timeline.