Comment by timr

I didn't say "speak Japanese" (I said try to use the language, which is just table stakes for visiting a country), and it should go without saying that you cannot change your race.

You can still blend in far more than most tourists do by a) watching the people around you, and b) being a little bit self-conscious.

It's absolutely astounding how much tourists stand out in Japan (or Paris, or London, or New York...), and it's mostly about their behavior and clothing. Ten minutes of internet research and a little bit of introspection would go a long way to solving both problems.