Yuka, a faithful busty wife in her third year of marriage, lives with her beloved husband and his younger brother, Daisuke. Her husband is a civil servant and a very serious man, and she is very worried about Daisuke, who, even though he is an adult, still has no permanent job and spends his days at the computer in his room. "Hey, Yuka. How's Daisuke doing lately?" her husband asks her at the front door before leaving for work. Yuka replies with a slightly strained smile, "Hmm... he seems the same..." "I see. Sorry, but I'll leave it to you," her husband says, as he heads off to work, seemingly relieved. Just as her husband and his brother are leaving, Daisuke, the unemployed younger brother, comes out of the room and boldly reaches out his hand to Yuka's buttocks.