Married for six years now, although the relationship between the husband and wife is very good, Ai's husband still shows no interest in sexual matters. Ai's neighborhood partners with foreigners, allowing foreigners to stay at the homes of locals in a 'homestay' arrangement, and locals can do the same when they go abroad. Ai's house was chosen to host an exchange student for a week. From the first meeting, Ai was attracted to the muscular, toned body of this student, Oliver. She and her husband introduced him to Japanese culture and food. While handing a towel to Oliver, he stepped out naked, and his huge penis instantly caught Ai's eye! From that moment on, Ai's mind was filled with images of this long, dark, and thick penis. Oliver felt the same; he was captivated by her beauty and her large breasts. Seizing the opportunity while Ai's husband was at work, Oliver approached and expressed his desire to sleep with her. Although his mouth was constantly unable to speak, Ai's body reacted to every click of Oliver's inner self. And for a week, she and Oliver fucked each other almost every day in her husband's absence...