The Opium War is a 1943 black-and-white Japanese film directed by Masahiro Makino. "Ahen senso" in Japan refers to the First Opium War. The story of the film concerns this war. The Opium War is a 1943 black-and-white Japanese film directed by Masahiro Makino. "Ahen senso" in Japan refers to the First Opium War. The story of the film concerns this war. The Opium War is a 1943 black-and-white Japanese film directed by Masahiro Makino. "Ahen senso" in Japan refers to the First Opium War. The story of the film concerns this war. The Opium War is a 1943 black-and-white Japanese film directed by Masahiro Makino. "Ahen senso" in Japan refers to the First Opium War. The story of the film concerns this war.