Ninja Bugei-chou, also titled *Manual of Ninja Martial Arts*, is the sole animated work by Japanese New Wave filmmaker Nagisa Oshima. The film adapts Sanpei Shirato’s classic comic about the son of a feudal lord who was assassinated during the Muromachi period. He sets out to avenge his father’s death and encounters Kagemaru, a renegade ninja who helps peasants and farmers rebel against Oda Nobunaga’s regime.