The Japanese Wife Next Door (2004)

To reach the wife next door one does not have to exit through the entrance to the home and then enter through the neigbour's door. All one has to do is literally walk to the next door within the family's home. A man meets two women and picks one. The chosen one is quite the horny, buxom nymphomaniac and soon her entire husband's family is hearing it, aware of it and very appreciative.