Mayuki Ito got married but because of the husband’s work, they are living together with the in-laws.
The Father-in-law is a good man, but he has a terrible libido and Mayuki Ito can clearly hear the noses they make at the bed. She also has a similar libido and is feeling very envious of the couple. Also because the husband doesn’t give her any action.
One day, an opportunity finally arises and she throws herself at the father-in-law, who doesn’t know what to do.