orange: prefectures through which I've passed, on the ground, but not visited
red: prefectures that I've visited
green: prefectures I've explored by bike, in some small part
I hope to be back to fill in the rest, some day. This stated because it turns out I've been to nearly as many prefectures as my mother-in-law. My father-in-law, however, has me beat: he's been to all but two!