Bakuen Campus Guardress
Japanese title: 爆炎CAMPUSガードレス
Type: OVA
Episodes: 4
Source: Original
Genres: Action, Comedy, Supernatural
Studios: Production I.G
Producers: Shueisha
Duration: 30 min per ep
Rating: R+ - Mild Nudity

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)