Kyonyû okusama: Etchi de gomen nasai(2013)

Keiko Kurishima is a full-time housewife whose nighttime activities with her husband have stopped. She is so frustrated that she envies her daughter's success with her boyfriend. Misaki, a fellow housewife, is also sexless, but is enjoying an affair with her lover. Encouraged by Misaki, Keiko tries to cheat on her husband herself, but...