Having completed about two-thirds of a circumnavigation of Lake Biwa, Japan’s largest lake, the final day was supposed to be an easy jaunt to the train station and a comfortable ride home to Tokyo for the Kangaeroo crew. “Ha, ha,” laughed the devil. On paper, the last leg of the Biwaichi circumnavigation was a mere 60 kilometers on a flat course, nearly all of which was isolated bike tracks. For the first hour, that was precisely what Kanageroo and the missus got as they headed out of Seta and off toward Hikone. The bitter taste of a terrible time at…