Otherwise known as Anatomia Extinction, this film starts what Tokyo Gore Police would push forward thirteen years later.
A salaryman sees a murder in the subways and is soon pursued by the killer, who wants him to join a group called The Engineers, who have taken it upon themselves to reduce Japan’s overpopulation. Despite not wanting any part of joining, the man begins to mutate, much like Tetsuo: The Iron Man, running throughout Japan and fighting his urge to kill.
Yoshihiro Nishimura wrote the script, directed this and also created all of the special effects. He would go on to make Meatball Machine Kodoku, Vampire Girl vs. Frankenstein Girl and, of course, Tokyo Gore Police.
This feels like a cyberpunk giallo made on no budget — which is true, as it was all funded by Nishimura — and has an interesting build to the body horror insanity that it leads up to.
You can watch this on YouTube.