One of the first OVA format adult anime. Based in the 1984 manga Barabanba by Go Nagai. (Source: AniDB)
as
Original Creator
Injuu Kateikyoushi
Prima Donna Mai
Doura
Fruits Version
Ecchi de Happy! Pin! Pin! Pin!
Try Z
Kouin Tenshi: Haitoku no Lycéenne
Original Video Romance Animation
Doll Saaya
Reyon Densetsu Flair
Guy: Youma Kakusei
Isourou Tengoku
Lovely Series
Blue Seagull
Henbou Moral Hazard
Yasuji no Pornorama: Yacchimae!!