[Taiwan-san... is friends with... Japan-san...? Maybe the nationality question will come sooner than he thought. He bows to her continuously.]

I'm sorry, Taiwan-san, but are you playing some sort of game? [Okay, that sounds mean. He straightens up and begins explaining himself:] I mean! You said that your name is Taiwan-san, and that you had a friend named Japan-san, but those are also names of countries too, aren't they? Not that they're bad names at all! It just seems a coincidence- I don't mean to sound rude!