Hitozuma Ryoujoku Sankanbi
English title: Desperate Carnal Housewives
Japanese title: 人妻凌辱参観日
Type: OVA
Source: Original
Episodes: 2
Status: Finished Airing
Aired: Feb 25, 2005 to May 25, 2005
Duration: 28 min per ep
Rating: Rx - Hentai
Studios: Dream Entertainment
Producers: Milky Animation Label, MS Pictures
Licensors: JapanAnime
Genres: Hentai

Three wives are required to attend a parent/teacher conference because their children were in trouble at school. When they get to the school, they are welcomed by two men, who tell them that the school is closed. The men then lead them to an old abandoned school and decide to punish them in place of their children. 

(Source: ANN)