Kunoichi Gakuen Ninpouchou
English name: Ninja
Genres: Action, Comedy, Supernatural, Hentai
Type: OVA, Episodes: 6
Aired: 1999 to May 22, 2000
Source: Original
Rating: Rx - Hentai
Synopsis:
As night arrives the shadows of Koga fall on Iga and a new threat exists for our lusty vixens. After a torid sexual encounter Yatsurugi Shinobu's best friend Mashiba Aya is infected with a parasitic bug and succumbs to its will. Having the same insatiable urges, the same tragedy is about to happen to Kage Lena. The only known antidote is stored deep within the labs of the Koga Institute and is the only thing which will save Kage Lena.

(Source: AniDB)