Maki, who lives with her daughter and her husband, was originally a serious person and only knew about normal sex. But one day, she finds out that her daughter and her son-in-law, Tetsuya, who has no sex with her, secretly called a delivery health service to torture her nipples... Seeing this, she could not suppress the tingling that welled up from deep within her body, and began to tease his nipples, saying, ``I want to mediate between husband and wife.'' Unable to contain her excitement as Tetsuya reacts in an amusing way, Maki steals her daughter's eyes and begins to tease Tetsuya's nipples, regardless of where he is...