The perverted father-in-law is always stalking his daughter-in-law

Karen married a Japanese guy and moved to Japan. Not understanding Japanese culture very well, she didn't understand why her father-in-law looked at her with hateful eyes, and the father didn't understand why his son was wasting a woman of such caliber. Things became decisive when her father-in-law witnessed her masturbating alone in the bathroom and decided to help her.