User blog comment:FairyRaven/Fairy Tail Chapter 465: 400 Years, Review and Commentary/@comment-83.253.78.244-20151207144151

I think this was supposed to be like a smaller preview of what happened 400 years ago and later in the story we will get a big real Flashback that will show everything that happened with the dragons, Acnologia, the war and other stuff and will also explain things we learned here more like who exactly Anna is, how Layla died and why she opened the gate and why the dragons were getting weaker for example.