User blog comment:FairyRaven/Fairy Tail Chapter 365: Fairy in the Jail!, Review and Commentary/@comment-24257713-20131229050248/@comment-5268982-20131229110156

It wasn't necessary however. For example, pointing a sword at an unconscious Mira would have more impact than pure physical pain at Erza. I can think of a million more ways to break the spirit and mind of someone without necessarily stripping them naked. I think that it's just another example of Mashima's pervertedness rather than something meaningful. I accept, however, that some may even find it necessary to the plot.