Where has your interest in Japan come from OP?
I was never that bothered about the place, but found myself living there for just over a year in my 20s (andcame to love it!) I taught English to a range of people - little kids, teens, adults.
I had a stereotype that the kids would be well behaved in lessons - the teens weren't too bad. But the under-10s were really disruptive!
I loved my time in Japan :) beautiful country! People work really hard - but there is a lot of inefficiency and meetings (not too dissimilar to the uk workplace then!)
What I found strange was cigarettes in vending machines on every street! Alcohol and coffee in vending machines at train stations and on streets! Porn mags in vending machines on the street!!!
And quite worrying - a LOT of sexualisation of school girls.
That said, everyone I met there was lovely. We all worked hard. It is a polite respectful hardworking country.
I would have stayed in Japan, but for two things - the sexualisation of girls (which I would not have wanted my future children growing up around), and that although i had many friends, they always saw me as their 'western' friend - almost a trophy. We never got passed this and I don't think we would have. Which is sad!
I got used to the food! A lot is delicious! But a lot is just not for me :) In thinking octopus is blue oil stuff (yuk!!), and Nato (apparently it's nice if you can get over the smell!!! But I never could!)
At the end of the day - people are people! Japanese people are the same as any other people on the planet :) trying to get through this life, provide for our kids, and feel content.