Mother-in-law gangbang ~Married woman married into a large family~

A man named Naotaro Otsuka, who had come to work as a migrant worker, proposed marriage to Nana, and she decided to abandon the land where she was born and raised and start a new life. A few days later, Nana visits Naotaro's house and is speechless when she sees the number of children he has - five sons and one daughter. Yes, this was the Otsuka family, a large family famous for the popular TV show ``Touchan Keikokuki''. During the interview, the family tried to show off how close they were, but that was just their public face for TV, and Nana gradually began to see the strange side of the Otsuka family behind the scenes...