Interesting question, yea i like japan so much, because it is a buddhist country, and i trust in budhism also, As I know about japan where people act respectfully in public. Most people will not talk loudly or act obnoxiously if there are other people nearby, and even more so if there are elderly people nearby. People don't eat or play music on the train, and they always say excuse me if they bump you.
Of course there are exceptions, mainly in teenagers but in general people are respectful of their fellow human and take pride in keeping their community or commute peaceful.