Twilight of the Dark Master

Twilight of the Dark Master (支配者の黄昏,) is a Japanese anime film based on a manga by Saki Okuse. It was produced by Masao Maruyama, directed by Akiyuki Shinbo, and the screenplay was written by Duane Dell'Amico. The film was distributed and licensed in 1997 by Urban Vision.

Plot
Long ago, the Great Mother Spirit created demons, guardians, and humans. In 2089, in Neo-Shinjuku, only a few demons and guardians remain. Tsunami Shijo is an ancient (fire manipulating) guardian from days long ago to aid a fledgling human race. Tsunami is looking for a human who was transformed into a monster by drugs. This leads him to Mr. Takaiya, the Demon leader, who killed his lover.

Tsunami becomes involved with a woman who has just lost her fiancé and her arm, and now wants to figure out why this has happened. Meanwhile, the Daemon leader is still alive and plotting to enslave mankind. Will Tsunami defend earth once again, or be corrupted as two other guardians have been by the Daemon leader?

Trivia

 * Differences between the manga and anime movie:
 * The movie makes it seem that it was Tsunami's lover who was killed by Takamiya. However, in the manga, it was actually his mother.
 * Tenku actually played a slightly bigger role in the manga. He's also not as friendly or easily taken down as portrayed in the anime.
 * The final battle was just as anti-climatic in the manga. It didn't take place in space. It was simply Takamiya mocking Tsunami with his mother's body, with him ending it by using his power to cause an explosion of fire to destroy him.
 * Twilight of the Dark Master takes place in Shinjuku in February 2019 in the manga.
 * Twilight of the Dark Master's manga is the only one out of the entire manga series that was released in English. Kaen Majin - Satin the Peerage and Kaen Majin - Onibarai have never been released in other languages to date.