Climax Family Full of Mistresses (2015)

The father, who runs a real estate agency in town, is having an affair with a young office worker, Yuki. His daughter Hitomi returns home for the first time in a long time after receiving news that he had collapsed from a heart attack during an act of adultery. However, the news is a lie, brought on by a parental desire to see her daughter. Mother Sanae is in divorce proceedings with a lawyer on the grounds that her husband has been unfaithful, and her mother is also in close contact with the young lawyer... Hitomi, whose parents both have lovers, has a strong bloodline.