Hiroki is dating a girl from his school, Kurumi Sawahitomi. Faithful, cute and absolutely perfect … But, Hiroki is a little dissatisfied with sex. That’s because she does not wear glasses when they have sex. While they study together, they decide to fuck. Convinced by Hiroki, she puts on her glasses. Seeing her with glasses, he ends up having sex with her twice in a row. Then he is arrested by his sister and punished by her…?