Onna Kyoushi Nijuusan-sai
Japanese title: 女教師 二十三歳
Alternative titles: 23 year old Female Teacher
Type: OVA
Source: Visual novel
Episodes: 2
Status: Finished Airing
Aired: Jan 24, 2003 to Jun 27, 2003
Duration: 28 min per ep
Rating: Rx - Hentai
Studios: Shura
Producers: Japan Home Video
Genres: Hentai

Honjou Rumiko is a school teacher caught in a web of blackmail and deceit. 

(Source: AniDB)