She is a housewife, Kodai. One day, the husband ordered the interior reform of the house, and the men of the craftsman went out to my house every day. Kodai smiled at the work of a young and cute "workman of an apprentice" who works in my home. It is an apprentice who is severely cautious and obstinate to work hard to make mistakes in work. However, when Kazuyo one day goes to the bedroom, the apprentice he indulges in masturbation while smelling my underwear.