Oliver, a young black man who came to Japan to learn about Japanese culture, ends up staying with married woman Ai for a week as a homestay student. Attracted by Oliver's earnest and sincere love for Japan, Ai teaches him about the country's many good points, including its cuisine and culture. One day, Ai happens to see Oliver after he gets out of the bath. She is so shocked that she is speechless when she sees Oliver's long, thick, shiny penis towering between his legs, and since then, she has been unable to get Oliver's penis out of her head...