Aoi Taiken
Genres: Hentai
Type: OVA, Episodes: 2
Aired: Oct 11, 1984 to Oct 7, 1985
Source: Unknown
Rating: Rx - Hentai
Synopsis:
One of the first erotic OVA. Based in an original story of mangaka Hachurui (羽中ルイ), it would also have a live-action version released almost at the same time and starring AV actress Kyoko Nakamura, both produced by Orange Video House. 

(Source: AniDB)