User blog comment:Sargenttacos115/Natsu and Gajeel age Theory/@comment-74.235.170.102-20140322220013

I think you're theory is good! When I saw Lucy in front of her mother's (Layla) grave, I noticed that she died in year X777, so I knew that had to do with the dragons disappearing on 7/7/X777, but I haven't found out exactly what happened yet.