User blog comment:Omega natsu2/Chapter 354: Ephialtes, Predictions./@comment-7418318-20131002221045/@comment-7418318-20131002231335

Are you putting in an effort to misunderstand me or does it come naturally to you?

I mean the current battle. Since the Quincies retreated for at least a few days after what you call the "first part of the invasion" that battle ended.

And when they came out of the shadows in the last few chapters, it began a new battle. A battle in which Nanao didn't participate until this chapter, which can be interpreted as "someone new" in this context.