Kyoushoku Soukou Guyver (1989)
English title: The Guyver: Bio-Booster Armor
Japanese title: 強殖装甲ガイバー
Alternative titles: Bio-Booster Armor Guyver, The Guyver, Гайвер, Guyver: The Bio-boosted Armor
Type: OVA
Source: Manga
Episodes: 6
Status: Finished Airing
Aired: Sep 25, 1989 to Feb 25, 1990
Duration: 29 min per ep
Rating: R - 17+ (violence & profanity)
Studios: Visual 80
Producers: animate Film
Licensors: Manga Entertainment
Genres: Action, Horror, Sci-Fi
Themes: Gore, Super Power
Demographics: Shounen

Shou and his friend, Tetsurou, stumble upon a strange orb-like mechanism, the Guyver Unit, in the woods. It physically bonds with Shou and turns him into the alien soldier, Guyver. His mission is to protect the Guyver Unit from the Japanese corporation known as Chronos. They are after it and two other units just like it. To retrieve the object, they send out vicious monsters known as Zoanoids. So no one is safe in Shou's life; not even himself.