Dragon's Heart Forest, the largest forest in the Unicorn lands, bordered the south shores of Dragon Lake. It was named after the legend that, after the Thunder Dragon fell in love with Hida, the Water Dragon hid his heart at the lake's bottom's, so that he would never need fear losing his powers to mortals. The Shinjo from Oshindoka Toshi harvested lumber from the forest jointly with the Bugaisha Governor, but the Governor of Aishou province received the largest share of the koku.