Or maybe you weren't trusting enough! They'd already been told this place was much different from what they were used to, so they should really expect nothing less than stoic men with giant bats. Sorry Senpai, gonna ruin your mysteriousness by actually answering the question.

"Yes, we just arrived here yesterday! We're from Iwatodai, in Japan."

Minako nudges Shinjiro a little, looking up at him with an encouraging smile; c'mon, there was nothing wrong with a little Q&A!