When I was in high school, two gent's from Japan came to finish their last year of high school. They always seemed angry with most people.
The only persons who had regular conversations with them were the teachers and those people who's families were very well of financially? When most of us tried to talk to them, we were ignored like we didn't exist. The school put two ping pong tables in the common room. That was the only place that I saw these two actually speak to me or most anyone else. At first everyone lost at ping pong to the gent's from Japan. But after four months of playing it was not just a one sided game any more. Then the gent's stopped coming to the common room all together?