Aoi Taiken
Japanese title: 青い体験
Type: OVA
Source: Unknown
Episodes: 2
Status: Finished Airing
Aired: Oct 11, 1984 to Oct 7, 1985
Duration: 22 min per ep
Rating: Rx - Hentai
Genres: Hentai

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)