Youjuu Kyoushitsu Gaiden
English title: Demon Beast Resurrection
Japanese title: 妖獣教室外伝
Type: OVA
Source: Manga
Episodes: 4
Status: Finished Airing
Aired: Nov 17, 1995 to Sep 13, 1996
Duration: 30 min per ep
Rating: Rx - Hentai
Studios: Triple X
Licensors: Critical Mass Video
Genres: Horror, Hentai
Themes: Mythology

From the radioactive emptiness of space comes the Demon Beast! A hideous alien monster, the Beast shares a psychic link with the beautiful Earth woman, Kayo. Bound by a forbidden past and a horrifying erotic encounter, she is destined to lure the Beast back to a helpless Earth. Her tortured soul cries out across dimensions, calling the Demon Beast to begin his reign of bloodlust, carnage, and terror!

(Source: AniDB)