 In North America, Central Park Media licensed the OVA in 2004.Viz Media released six volumes of the first part of the manga in 2005.The story revolves around Kiichi Miyazawa, a 17-year-old teenage high school student and his father, Seiko Miyazawa, who is training him in the family's secret martial art, Nadashinkage-ryu, a fighting style that was created around the end of the Meiji Era Japan.