At the request of her father, who is on an overseas assignment, Ayumi takes care of her son, Kyosuke, who is aiming to become a professional shogi player, as a housekeeper. Kyosuke, who had no time until the pro-am match, practiced around the clock without eating or sleeping, and as a result lost his concentration. “At this rate, I won’t be able to transfer to the pros again this year. One day, Ayumi cleans up while wearing a short skirt while Kyosuke is practicing. And when Kyosuke witnesses Ayumi's flickering panties, he regains the concentration he should have lost...
