While I'm job hunting, my father introduces me to a couple who live in Tokyo, and I'm staying with them. Meanwhile, the husband has to leave for three days on a sudden business trip. I'm left alone with the wife, Murasaki, who exudes an erotic vibe... Inside, I'm feeling excited. One day, while I'm reading a book of pure literature, Murasaki is drawn to the book's theme of "forbidden love" and seduces me, but I can't resist getting an erection...