Masao has a very high libido, his wife is the complete opposite. She always tries to avoid every time Masao wants to have sex. This time, Miho visited her daughter's house for a while. Because she was attracted by her mother-in-law's beauty, that night, while her mother-in-law was taking a bath, Masao secretly took Miho's underwear to masturbate. Unfortunately discovered by Miho, Masao had to tell her the truth about the couple's bedding. Knowing that this is her daughter's fault, Miho wants to make up for Masao by sucking her son-in-law's cock. However, Masao's libido not only did not decrease, but also increased higher than before. You want to be fucked! There was no other way, Miho had to pamper her son-in-law. But because her husband has been dead for a long time, Masao is extremely healthy, allowing Miho to enjoy a feeling of happiness that she hasn't known for a long time. And since then, Miho has been secretly letting Masao fuck every time she gets the chance. She even thought about staying here so that every day she could replace her daughter with sexual satisfaction for her son-in-law...