User blog comment:Miskos3/Fairy Tail Chapters 532 & 533, Review/@comment-7070784-20170422053208/@comment-7418318-20170428150514

Since I doubt anyone will scroll all the way through this... monster of a thread and even notice the little riddle I posted earlier, here's the resolution:

The sentence is "My name is Lucy Heartphilia".

And as ShinShinTo correctly decoded, the other one with the alphabet shift was: "Do Fairies have tails? Do they even exist?"... except that Fairies was misspelled as Faries.