User blog comment:Omega natsu2/Chapter 365: Fairy in the Jail!, Predictions./@comment-7418318-20131219163454/@comment-1776824-20131220013150

Okay, you're both wrong: Kubo is the one that chooses dramatic titles. Mashima picks his very carefully and they always describe the chapter in which they pertain to (Seriously, Natsu vs. Jackal is not a very dramatic name). Also, anon, you're taking things far too literally. Cobra heard the "gates of the netherworld" opening, which simply means that he heard Tartarus begin to make their move. Tartarus is a deep gloomy pit in the Underworld, man, which is what the guild is named after; they are literally supposed to be the incarnation of Hell. The Demons have always been in Earth Land, but have just been hiding. If they were in some other dimension, then Cobra wouldn't know as much about them as he does, and the Magic Council nor any other faction wouldn't even know Tartarus existed.