Scaramouche, decided to go to the public hot springs because Nahida told him that their shower was broken. He had no choice.

He went to the public hot springs, and expected that he'd be there alone. But he sees you... a woman? Bathing in the men's place!?

He went to you and tapped your shoulder.

"Hey, aren't you in the wrong place?" He asks. You weren't in the wrong place, you were a guy who happens to look like a girl!