Urotsukidōji IV - The Infernal Road (1991)

Repeatedly beat to a pulp by gamblers, cops, and gangsters, lone wolf Shoji Yamanaka finally finds a home as a Muraoka family hitman and falls in love with boss Muraoka's niece. Meanwhile, the ambitions of mad dog Katsutoshi Otomo draws our series' hero, Shozo Hirono, and the other yakuza into a new round of bloodshed.

Fear runs rampant throughout Tokyo with the revelation that demons in fact exist amongst us. Paranoia and the darker side of humanity boils onto the streets as people turn on one another, suspecting that anyone could in fact be a demon hiding in human clothing. Amidst the growing tensions, tragedy strikes Akira causing his mind to snap, retreating into his subconscious, allowing his Devilish alter-ego Amon to break free from Akira's cage of flesh and wreak havoc on both human and demons alike.

Legend has it that the human race is not the only dominant civilization living on Earth. Two other races exist in this world: the Makai (a demon race) and the Jujinkai (a half-man, half-beast race). Once every 3,000 years, a supreme being known as the Choujin (Overfiend) will emerge and bring balance to all three realms on Earth. In present-day Japan, after 300 years of endless searching, a Jujinkai named Amano Jyaku has discovered the presence of the Choujin inside high school slacker Tatsuo Nagumo. But now, Amano, along with his sister Megumi and their sidekick Kuroko, must protect Nagumo and his new girlfriend Akemi Ito from the Makai, who believe that Nagumo is not the Choujin, but an evil entity bent on destroying all living beings on Earth.

July 1998 - After a group of delinquents is found dead in their hangout place with all their limbs twisted and torn off, Aozaki Touko receives a request to find the murderer and asks Shiki for help. The main suspect is Asagami Fujino; a girl who was the boys' plaything until recently, who Shiki believes to be "one of her kind".

Tomoe Enjou is attacked by bullies from his old school and saved by Shiki Ryougi. He asks her to hide him at her place and admits that he killed someone. Several days later, there are still no broadcasts about the murder as if it didn't happen... and when the victims are found, they're alive and unharmed.

June 1998: After spending two years in a coma caused by a traffic accident, Shiki Ryougi awakens with amnesia. She is visited by Touko Aozaki, a wizard and proprietor of a studio called Garan no Dou. Shiki has lost not only the memory of her accident, but also any real sense that she's even alive. Strangely, enigmatic beings begin to attack her...

March 1999: Mikiya Kokutou meets Shiki Ryougi again at the same place where he met her for the first time four years ago...

A peace treaty between the Earth and the Black World, a parallel universe of demons, is coming to an end. Two cops, Taki, a human male, and Maki, a female demon, are assigned to protect a diplomat who will help secure another treaty. A radical group of demons from the Black World are out to assassinate the diplomat and prevent the treaty; only the bond that forms between the two cops can save the Earth from destruction.

After thugs brutalize a deaf-mute woman, the spirit of an Apache warrior takes over her lifeless body and sets out on a bloodthirsty quest for revenge.

Hellbent on taking over Earthrealm, Kano viciously attacks town after town with the aid of three cold-blooded Black Dragon mercenaries. Those who don’t submit are annihilated but one young man won’t bend the knee to Kano: Kenshi.