OFKU-080 Hiding from her father-in-law's eyes, she had sex with her mother-in-law... Mirei Kyono (44)

My wife is leaving for a three-day, two-night hot spring trip with a friend. Her mother is 44 years old and in her prime. She's a charming, youthful woman with a charming femininity. My mother-in-law is slim but has just the right amount of flesh, and I've always felt sexual desire for her... My wife's family treats me like their own son. However, I have ulterior motives toward my mother-in-law, and I want to somehow get her in the mood...