Fuyuki, who has taken on the task of looking after her son Kyosuke, who is studying for his college entrance exams, at the request of her father who has been transferred overseas. Kyosuke, who is in his fourth year of retaking the exams, was anxious. He was studying intensely for 15 hours a day. His eyesight had significantly deteriorated due to overwork, and despite several days passing, it did not recover. Even after going to the hospital and being told it was just fatigue, he was at a loss. One day, as Fuyuki was doing household chores in a tight skirt, the panties peeking out from her plump thighs suddenly caught Kyosuke's eye...
