Also known as Inran naru ichizoku: Dai-ni,shô-zetsurin no hate ni)
Japanese Wife Next Door
A quiet office worker looking for a girlfriend and marriage goes to a party and meets a pretty girl and starts dating her. Six months later they get married and he discovers her secret, she’s a nymphomaniac! At first he enjoys the nonstop sex, but then tires and starts staying at the office longer to avoid all the sex. Soon his wife’s cravings force her to look elsewhere…his family. Seducing everyone from his father to his grandmother, his wife turns his entire family into sexual animal! Great fun and very sexy.