Oh, sorry, my mistake, aha, Japanese. . .of course, I should have known by reading more properly and because of the uniform. . .never mind.
These days you often can hardly say by faces any more, right.
But by behaviour you often can.
I had a friend, who was welcomed in Chinese language by the Chinese, in Korean by the Koreans and in Japanese by the Japanese, here in Berlin, actually. That was always good fun! And everyone could swear that he looks typical.
Only when they had him around for longer, they realised, who was there.(but they all liked him)