User blog comment:EvanDude345rv5/Fairy Tail 356: Tartarus Arc Prologue/@comment-82.20.156.238-20131020170057/@comment-5303512-20131020191138

@Woest, well remember Lullaby? The flute was the actually demon, so it suspect the books will manifest into their current forms.

And I suspect is will be something like the Pain Invasion Arc, Quincy Arc and/or Marine Fort Arc.