A man asks Misaki to participate in a survey, and after drinking the water he gives her, she gradually loses consciousness... and when she wakes up, she finds herself blindfolded and with both her hands and feet tied. She tries to resist as the man plays with her as he pleases, but the special drug in the water she drank earlier releases a large amount of pleasure-inducing substances, and her body feels the opposite of what Kokoro. As time passes, the drug takes effect, and the desire that had been sleeping deep inside her grows...