Bakuen Campus Guardress
Japanese title: 爆炎CAMPUSガードレス
Alternative titles: Combustible Campus Guardress, Bursting Campus Guardless
Type: OVA
Source: Original
Episodes: 4
Status: Finished Airing
Aired: May 27, 1994 to Nov 25, 1994
Duration: 30 min per ep
Rating: R+ - Mild Nudity
Studios: Production I.G
Producers: Shueisha
Genres: Action, Comedy, Supernatural
Themes: School

Long ago, the gate to the world of darkness was sealed. Now evil warriors, known as Remnants, are trying to reopen the gate and let demons take over the world. However, at Tobira High School, there exist guardians of the gate who must risk their lives to prevent the gate from being opened. 

(Source: ANN)