SPRD-600 - Better than the wife... Son-in-law obsessed with mother-in-law's body

*A daughter and her husband live together in the home where the wife's parents live. Her husband likes her mother-in-law, who is pretty for her age, and her mother-in-law doesn't think badly of her daughter's husband either. My wife's parents have a good relationship, and they sometimes give blowjobs in the bathroom and have intense sex in bed that night. This time, there is a bedroom scene between the daughter and her husband, and the husband wants to have sex with his wife, but she refuses because she is sleepy. Also, in the final scene, his wife sees him having sex with his mother-in-law, but in the past, the wife had seen the scene and gone away, leaving them unaware that they had been seen, but this time the film ends with the two of them being confused when they realize that they were seen. Kyoko Shimada is youthful and has plenty of sex appeal, but the way she looks when she's in the dark is not erotic. It's a pity that I feel like I've woken up somehow.