Miyuki, the most beautiful girl in her class, and her handsome boyfriend were a perfect couple. One day, her boyfriend called her and asked her to go out with a boy in her class who she didn't like for a week, and she agreed. Miyuki reluctantly started dating him, but as his sexual demands escalated every day, she finally couldn't resist him and ended up cumming over and over again when he inserted a dick bigger than her boyfriend's. Once she experienced the pleasure, she started craving dick herself and continued to have orgasms.