Akio Jissoji's Buddhist Trilogy.

Near a remote Buddhist monastery, a young man falls in love with his sister and gets her pregnant. After a monk finds out, the young man becomes an assistant to a master sculptor, only to proceed to complicate matters with his affairs.

Two university students from Kyoto decide to swap partners and spend the night in an isolated motel. However, one of the couples is attacked. Desperate for answers, they search for the attackers and come across a cult that promotes sexual freedom.

The ascetic houseboy of a Japanese lawyer bears witness to the secretive sexual relationship between the lawyer's assistant and the maid, the lawyer's wife's sexual dissatisfaction, and the arrival of the lawyer's brother, who has a plan for the family's land and property.