My rating: 6/10
This short sci-fi movie starts off telling the story of Japanese history, beginning with the Japanese civil wars in 1600 AD and the falling of Shogunate, after which comes the period of Japanese attacks on Russia and China, through the period of Great War and World War II. So far, movie is telling us history, but after that it becomes science fiction. Japan prospers for the greater good of the mankind until the Earth is attacked by an alien force. Japan, trained for war, is the only country that can stand in the way of this much advanced civilization. This is the time when they activate their robots, to fight against alien threat.