If someone needs OSM Japanese version:
This map covers all of Japan and uses Japanese characters (kanji and kana). About 500 MB in size.

Oregon Japanese sample

Download japan.zip (for use in a GPS device, gmapsupp.img)
[Only registered and activated users can see links. ]

Spoiler: source
http://admincabal.com/osm/


English version (with contours) updated to 2015-05-26
Code:
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