User blog comment:PUNCHURPREGNANT/Gray and Silver Predictions/@comment-79.84.83.94-20140531080833/@comment-24784846-20140531224606

Ok here let me break this down for you so you understand, it basically works like a novel's chapters, Mashima made the Tartarus Arc like a book here let me explain that further

Tartarus Arc: Prologue= Introduction of Tartarus, new information too.

Tartarus Arc Chapter 1: Corruption and Villains= Ex-Council member Crawford turning out to be evil (Corruption), and Oracion Seis(Villains) are centered during that "chapter",and note that it happened all in the time span before chapter two and that it had to do with corruption of the council and villains that are Oracion Seis.

Tartarus Arc Chapter 2: The Song of The Sky Dragon= It had centered the need to stop Face as well as Wendy fighting Ezel, and how she grew to be the sky dragon she is,and when she had attained Dragon Force(Hence "Song" of the Sky Dragon),and note that it happened all in the time span before chapter three and it didn't start with the Wendy vs Ezel stuff.

Tartarus Arc Chapter 3: The King of Hades= This centered around Mard Geer(Hence "the King of Hades") and what he can do, and the problems he had created for Fairy Tail,and note that it happened all in the time span before chapter four.

And now.. Tartarus Arc Chapter 4: Father and Son= This MIGHT center around the relationship between Silver(Father) and Gray(Son), and a likely chance that we might see other things before seeing Gray vs Silver and the truth behind that...

Basically it the arc is like a novel, it is going by some part of the arc like chapters