[His brows furrow. The warmth in her voice is familiar, but he is not yet sure how to perceive it. It doesn't feel like a professional façade. Actually, it sounds like it might be troublesome to deal with.

He nods in understanding, keeping his own tone cold and robotic.]

I was in Tokyo for business. [Ai lifts his hand to his chin, seeming to be in thought;] Interesting. I did not expect to run into someone familiar with Japan quite this quickly. How would one test if we were from the same Japan, I wonder..?