User blog comment:Jho5689/Fairy Tail 337 and onwards/@comment-70.233.148.84-20130623130239/@comment-7418318-20130623133751

So far no other way to travel through time has even been so much as hinted at, so I doubt that is the case.

But I don't think that now suddenly everything bad will disappear and they ride happily into the sunset either.

There are always the possibilities that F-Lucy was simply mistaken in her theory, that someone else put those lines in the journal to manipulate them or that there's going to be some big space-time mess into which they'll be sucked and potentially transported into the past, future or a parallel timeline.