Yuji often held study sessions at his friend's house for his entrance exam preparation. However, his real purpose was to meet his friend's mother, Rumiko, whom he admired. (She's still beautiful today...) The time when he could be satisfied just by seeing her face had long passed. Today, he mustered up the courage to confess, but at the last moment, his friend interrupted him. Later, Yuji realized he had left something behind and went to his friend's house to retrieve it... but he heard Rumiko's moans...