I can only really answer 1 thing, Describe Japan geographically, so here we go.
Japan, geographically, is one of the worst countries. It's like Italy, but worse, Mountains in the Middle with basically Tokyo and Osaka being the only mountain-free places, hence why they're so populated. That's all I can really say about Japan, so sorry if it's not the answer you're looking for, I can try to explain it in the way you want.
