Basically at any time you are in Japan, you are at the coast (the plains count), in the mountains, in the foothills, on Hokkaido, on a minor outlying island, or at Lake Biwa.
Dude, who even knows.
Basically at any time you are in Japan, you are at the coast (the plains count), in the mountains, in the foothills, on Hokkaido, on a minor outlying island, or at Lake Biwa.