Tetsuo: The Bullet Man is a 2009 Japanese cyberpunk horror film directed by Shinya Tsukamoto. It was preceded by Tetsuo: The Iron Man and Tetsuo II: Body Hammer.
Plot[]
Anthony is a man with an American father and a deceased Japanese mother living and working in Tokyo. One day, his son is killed in a car accident and shortly afterward, Anthony begins to transform into metal. Receiving a vision of scientific documents, Anthony uncovers a secret room in his father's house which contains files detailing a mysterious Tetsuo Project. He also learns that his father met his mother while they each researched the project. Anthony's wife Yuriko arrives but before she sees her transformed husband, a S.W.A.T. team arrives and she is taken hostage. Anthony's transformation finishes its hold and he defeats the S.W.A.T. team with bullets fired from his body, but refrains from killing them. The severely injured team is extracted, but then killed by Yatsu, this film's version of "The Metal Fetishist".
Now believing that he has been possessed by a demon, Anthony attempts to kill himself using a gun growing from his hand but this fails. Anthony and Yuriko then meet up with Anthony's father, who explains everything: Anthony's mother was disgusted with the militaristic outcome of the Tetsuo Project, having joined it as a way to help give crippled and sick people new bodies. When Anthony's mother realized that she would soon die from cancer, she insisted that her husband recreate her as a Tetsuo android so that he may still have a child with his recreated wife. That child became Anthony, which means that Anthony and his late son were always part Tetsuo. Meanwhile, it is revealed that Yatsu was the one that killed Anthony's son via vehicular homicide, as a way to provoke Anthony's transformation. Yatsu, in this version without metal powers, has come to the conclusion that the only way he would prefer to die is by a bullet from Anthony's body as committing murder would push Anthony to consume and destroy the world in Yatsu's stead. Yatsu kidnaps Yuriko and threatens to detonate a bomb he has fashioned into her necklace if Anthony does not shoot him. Anthony's rage transformation reaches its pinnacle and he becomes a gigantic metal beast with a cannon in its center. Yatsu provokes and threatens Anthony to shoot him. Receiving a vision of the city exploding in a giant ball of light if he does kill Yatsu, Anthony denies this wish and instead consumes Yatsu whole into his metal body, then returns to his human form.
Five years later, Anthony and Yuriko have had a new child and have returned to a normal, contented life. As he stands before a mirror, Anthony hears Yatsu's final words: "[You don't want me inside you.] You don't know what I'll do". However, when a group of young thugs attempt to intimidate Anthony while walking down the street, rather than allow his anger to overtake him, he walks calmly and confidently past them.