Riding in Japan is a pleasure. On previous visits to Japan I remember looking at the Tokyo expressways and thinking it was all too confusing and I would never bother. The train system is fantastic and the Shinkansen are definitely a fun experience. But for a longer visit it is definitely worth having a go at driving.
The big plus is your fellow drivers. Japanese drivers are very courteous and relaxed. No one is being rude and tailgating you or skimming past. People push the speed limit a little but when there is no choice they just chill and stay a safe distance back.
From Tsuyama I kept going East and skirted around the top part of Kyoto. I might come back to Kyoto but for now will keep going north east. The weather is dictating my route. I just look a few days ahead on the forecast and avoid the snow.