Yuji often went to his friend's house to study for his entrance exams. However, his real purpose was to meet his friend's mother, Rumiko, whom he admired. (She's beautiful today too...) The time when he was satisfied just by looking at her face is long gone. He gathers up the courage to confess his feelings to her, thinking that today is the day, but is interrupted by his friend at the last moment. Later, when Yuji realizes that he has left something behind, he goes to his friend's house to get it, but he hears Rumiko moaning...