Miyuki, the most beautiful girl in class, was happily dating a handsome boyfriend. One day, her boyfriend asked her to date another male classmate for just one week, and without hesitation, Miyuki agreed. Though she felt slightly uneasy, she was shocked to realize her own conflicted emotions. As the dates progressed daily, things quickly escalated, and Miyuki found herself unintentionally responding to his advances. Before long, she was penetrated by his large cock and writhed in ecstasy from her first intense pleasure. Once she experienced that sensation, Miyuki began actively craving his cock, repeatedly convulsing and driven to one climax after another.