Big X

This is a grand-scale hero action adventure in which a boy given an iron body via the secret weapon "Big X," possessed by the Nazis, battles against evil. Invited to Germany during World War II, Dr. Asagumo is asked by Hitler to collaborate with him on the research of the new weapon Big X. Concerned about the possible affects of the completion of Big X, Dr. Asagumo intentionally delays the progress of the research, conspiring with his co-researcher Dr. Engel. Immediately before Germany is defeated, Dr. Asagumo implants a card inscribed with the secret of Big X in his son, Shigeru, and is then shot to death by the German army. Twenty years later, the card is discovered in the body of Shigeru, who was then living in Tokyo....