@cicerone imposter,
I used to correspond with a woman who worked in the New Zealand embassy in Tokyo. She mailed me some English language books. One was a novelized story about a real life Christian priest who went to Japan, despite the ban on Christian religion. It was called Silence. The other one I recall was a history of Japan. Most engrossing. It was enough years ago I have forgotten a lot, but it helped my understanding quite a bit. I just recalled, there was another book describing modern (1960s modern) Japanese society.
I wandered off base in Osaka one time, just to see where my feet would take me. The taxi drivers all assumed I was looking for the red light district but I wanted to see something of the city. I ended up in a suburban neighborhood that looked on the surface much like some of the neighborhoods in some American communities. I passed a group of boys playing in a field. One of them called out, "Hello," to me. His friends looked at him impressed as I said, "Hello," back. After a time I got lost. I approached a very old man, who smiled then held his head, shaking it to indicate he thought I had had too much to drink. But he knew what I wanted and he set me back on the right street to the base. I did this sort of thing in Hawaii too, because I only made about 37 dollars every two weeks and could not afford to do much.