Seeing that she did not fall into bait but seeing genuine warmth in her smile did not drive him away at least but knowing for now he should not keep pursuing. One time is compliment, multiple times it becomes more pressuring. So he smiles and replies after finishing handshake with her; "Well, not that hard when consider my grandmother was from Japan so there was always little Japan language going around in family mixed with the German words. But if speaking language differences in German and Japan, they are different. In Japan one word can hold multiple meanings, based just in tone how it's said, where in German word structure alters based what your talking about. So in way German is more clearer about matter what your talking about while in Japan you need observe body language and tone of voice to be sure what someone said to you."