Soujuu Senshi Psychic Wars
English name: Psychic Wars
Genres: Action
Type: OVA, Episodes: 1
Aired: Feb 22, 1991
Studio: Toei Animation
Source: Novel
Rating: R+ - Mild Nudity
Synopsis:
Ukyo Rettsu, a surgeon, treats a mysterous old woman for a mysterious "cancer." The growth turns out to be a messenger from the ancient past of Japan heralding a demonic invasion of the Earth. Ukyo must go back in time and fight the race of ancient demons. 

(Source: AniDB)