When I think of Japan, I think of cherry blossoms, Mt. Fuji, busy Tokyo streets, temples, sushi, and a homogenous society with very few outsiders. It turns out the last one is not really true. To see what I mean, read this: How homogeneous is Japan? – Noahpinion.
The author, Noah Smith, has depth when it comes to things Japanese and it shows in that piece. I highly recommend him in general, not just for things about Japan. But if your ideas of Japan haven’t changed in some time, that piece will give your brain a much needed upgrade.