Satsuki lives with her daughter and son-in-law, doing her best to maintain harmony in the household. Lately, however, her daughter's attitude toward her husband has grown increasingly cold, causing Satsuki great distress. Just today, when the son-in-law complimented a meal Satsuki had prepared, her daughter became sullen, leaving the house filled with tension. Late at night, Satsuki heads to the kitchen and finds her son-in-law sitting there, clearly dejected. As she talks to him, she learns his troubles go beyond food—he confesses he's suffering from a sexless marriage with her daughter. Though reluctant at first, he eventually opens up about his frustration. Moved, Satsuki boldly says, "I'm sorry for my daughter. Just tonight, I'll make it special for you," and begins stroking his crotch. A few days later, Satsuki asks her daughter why they haven't had children, but the question is evaded. Drawn to Satsuki's body, the son-in-law starts pursuing her despite his wife being present. Satsuki protests, "No, that time was an exception," but he silences her with a kiss and starts caressing her body. Though she resists, her body begins to respond, dampening her panties. As he teases and arouses her, her body opens up, and just as he enters her, her daughter calls out for him. Relieved, Satsuki pulls away—but soon realizes her body still aches with desire.