User blog comment:IamJakuhoRaikoben/Chapter 355: Song of the Fairies, Review./@comment-5006572-20131010190448/@comment-7418318-20131010230323

I think that Erza was just so surprised that Natsu would dare to hit her, that she needed some time to convince herself that this was really happening.

And when she did, the pain began >:D