Married for six years, although the relationship between the two spouses is very good, Ai's husband still does not care about sex. Ai's neighborhood has a partnership with foreigners, offering foreigners to stay at the homes of people in the neighborhood as "homestay", and vice versa when people from the neighborhood go abroad. Ai's house was chosen to take care of an exchange student for a week. From the first meeting, Ai was attracted by the muscular, fit body of the student Oliver. She and her husband introduced him to Japanese culture and food. While handing a towel to Oliver, he went out naked, causing Ai to be hit in the face by his huge cock! From that moment, Ai always had the image of this big, black cock in her mind. Oliver, on the other hand, was captivated by her beauty and big breasts. When Ai's husband was at work, Oliver approached her and desired to fuck her. Although she kept saying no, Ai's body responded to every thrust deep inside her by Oliver. And for a week, almost every day, she and Oliver fucked each other when her husband was absent...