Psycho – Shimai Donburi Eng Uncen

A couple who met in their high school years, married later on and are a having happy and adventurous sex life.
A wife works as a manager of the restaurant who brings in the money, and her husband stays home taking care of household chores everyday.
The young wife is adventurous, fun-loving and never turns her sexual advances down. There are peaceful days until the wife's sister, a college student, moves in.
As their curiosity grows, there is a secret adventure developing between the husband and his sister-in-law living under the same roof. In the end, there is one amazing voyage awaiting them.