The Drivers License Centre
Renewing a drivers license in Japan is couple of hours of dealing with bureaucracy, if you haven't done anything wrong since you last renewed. Otherwise, it takes even longer.
Contrast to Australia where you can do it online if you don't need new photo (there you only need a new photo once every ten years), even when you need a photo, you can get it done at a post office and it only takes a couple of minutes.
Another thing different in Japan there are various colours of drivers license depending on how good you've been. I'm now on Gold which is the best one.
From A Stream of Images