My girlfriend is a fellow member of the tennis club. One day after practice, I couldn't hold back and tried to kiss her, but she refused, saying, "I want it to be more romantic... My parents won't be home tomorrow night, so let's do it then." Right after that, I realized that Okazaki, our tennis coach, had secretly recorded the moment I tried to force myself on her. Using the video as leverage, he begins blackmailing her, turning her into his personal sex slave. Gradually, she falls under his complete control as her emotions are stripped away. Her mind begins to break down, and she's driven into a place from which there's no return.