The Japanese Wife Next Door [淫乱なる一族 第一章 痴人たちの戯れ]

Office worker Takashi shares a drink one night with two women: Ryoko and Sakura. Fate intervenes and he subsequently ends up marrying Sakura. The newlywed couple move into Takashi’s family home (shared with his sister, father and grandfather), but Sakura’s nymphomaniac sex drive soon starts to cause tensions.