It was Dorothea.

Just as Petra was seeming to take a nude dip in the island's waters, one of her classmates came to interrupt her, and be shocked at her nudity.

"Petra!, what the- ?!!", the voice said shocked and confused.

Upon hearing, Petra turned to see who said it, and to her lack of surprise, it was Dorothea, who by now, had changed into a purple and black swimming suit.

"How hi!, Dorothea, how you are ?...", Petra waved and replied happily, while at the same time, being a bit hesitant to do so.

"Fine, but tell me, why aren't you wearing a swimsuit ?", Dorothea asked curious.

"A swimsuit...?", Petra replied a bit confused, for she didn't know what was one.

"Yes, a swimsuit, the thing you wear to swim. oh, i get it, you're still changing, sorry", Dorothea responded before apologizing.

"Well, if that's a swimsuit, i guess i am already wearing one", Petra replied while showing her body.

"But you're naked!", Dorothea pointed out confused.

"Yeah, that's how we swim back in Brigid!", Petra explained with an smile.

"Oh, ehh...,", Dorothea said puzzled, for she didn't want to offend Petra, but at the same time, couldn't let her just stay naked. "Well..., the thing is..., that in Fódlan, we don't usually swim naked..., and for us to see you naked, would be quite uncomfortable", she politely explained.

"Right....", Petra replied a bit nervous, for truth to be told, she was also somewhat uncomfortable with Dorothea seeing her in this state, no thanks to her time learning in Fódlan making her aware of her own nudity. "In that case, can i wear a swimsuit ?", she offered, both to please Dorothea, and also because she realized how awkward would be for her to be naked in front of everyone.

"Sure, i can lend you one of my own", Dorothea replied, and so, she and Petra went to her cottage to get a swimsuit for her, but as always, things often never go the way you wanted, for soon enough, something unexpected happened to interrupt them.