Desperate Carnal Housewives

人妻凌辱参観日

Hitozuma Ryoujoku Sankanbi

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: Anime News Network)