There was only one man in the house, the rest were all women. The young man, about 25 years old, was truly lucky to have incest with his younger brother, older sister and even... his mother. What's different about the movie compared to other movies of the same genre is that they have sex with each other openly, from the bedroom to the toilet, from the yard to the living room, even where they can have sex. And when the two of them were fucking each other, the rest of the family acted as if nothing had happened. Perhaps they were so used to it that even if they looked at it, they no longer had any emotions.