Married and her family life is happy, but Mari Takasugi is never happy about the marital relationship, because her husband is powerless to help her satisfy anything. But the father-in-law was different, extremely mature like he was in his twenties, every day he had sex with his wife, making his daughter, who had been secretly watching for a long time, jealous and sat there masturbating every day. Unable to endure this forever, Mari immediately tried to find a provocative way to do housework in front of her father-in-law to seduce him. With a man as prolific and passionate about sex as him, how could he not be erect?