Youma
English title: Blood Reign: Curse of the Yoma
Japanese title: 妖魔
Alternative titles: Curse of the Undead Yoma
Type: OVA
Source: Manga
Episodes: 2
Status: Finished Airing
Aired: May 1, 1989 to Jun 1, 1989
Duration: 38 min per ep
Rating: R - 17+ (violence & profanity)
Studios: J.C.Staff
Producers: animate Film
Licensors: ADV Films
Genres: Action, Drama, Horror, Supernatural, Suspense
Themes: Mythology
Demographics: Shoujo

A terrible war has ravaged the land, and now, fueled by the blood of numerous fallen warriors the Yoma, demons from hell, emerge once more. A skilled ninja seeks to end the bloodshed these demons inflict upon humanity, but to do this he must fight against his undead former best friend and fellow ninja who was killed in battle and has been resurrected to serve the Yoma. 

(Source: ANN)