Wicked City (1987)

Name: Wicked City
Released: 1987

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.

Genres: Animation, Fantasy, Horror

What to watch after Wicked City

Vampire Hunter D (1985) — Same subject: adult animation
Metropolis (2001) — Two steps away in the credits
Godzilla, Mothra and King Ghidorah: Giant Monsters All-Out Attack (2001) — Two steps away in the credits
The Sinners of Hell (1960) — Same subject: demon
Memories (1995) — Two steps away in the credits
Hellraiser (1987) — Same feel: dark, disturbing