Yeah, but it's a bit odd since one of the last flights is to NRT. So you would only need a oneway to NRT to start the RTW. And you could do that one anytime since the RTW will be valid for another year. It's more than a free trip to Japan...

Hell, even buy some LifeMiles and fly cheaply in First as well. Or reverse the trip and even start in NRT. The savings are really substantial.