Nobu Kanaoka

A man is experiencing problems with metal showing up and protruding from his body. Apparently he got a piece of metal in his head when he was hit by a car (imdb)

A young boy, Hikari, is transported into the future by a time machine, where a group of Shinsegumi vampires is threatening to take light away from the world forever thanks to the construction of a bomb fomented by a young woman's life. An elderly teacher, Momo Sariba, helps him to fight the monsters and fulfil his destiny: bringing light to the end of an era so that the following one will not be in darkness. (rottentomatoes)

A businessman, Tsuda, runs into a childhood friend, Tajuki, on the subway. Tajuki is working as a semiprofessional boxer. Tsuda soon begins to suspect that Tajuki might be having an affair with his fiance Hizuru. After an altercation, Tsuda begins training rigorously himself, leading to an extremely bloody, violent confrontation. (imdb)

Sequel to "Tetsou" this time has the Iron Man transforming into cyberkinetic gun when a gang of vicious skinheads kidnap his son. When the skinheads capture him, they begin to experiment on him...speeding up the mutative process! (imdb)

Fans of Tetsuo:the Iron Man will find this film of interest: it is basically the same story, only as a short, and in color. All of the same elements are there: The salaryman played by Tomoro Toguchi; Shinya Tsukamoto playing a nemesis who remotely induces a robotic woman to attack Salaryman in the subway; the interlude with the drill-penis; the combination of both characters into a larger, metal-encrusted monster at the end of the film. The soundtrack has a great song by Chu Ishikawa... (imdb)