User blog comment:BlackWizardZeref/Fairy Tail Chapter 418: The Challenger Review & Commentary/@comment-24963954-20150203215058

I guess I have discovered the true meaning behind the word E.N.D.:

Ecchi Natsu Dragneel.

It all makes sense now. He goes on a Journey to learn how to melt a girls clothing. This is what happens when a boy goes under the wing of Gildarts. :>

Props to Hiro Mashima for this amazing plottwist.