Toshiya goes to his mother's sister and her husband's house in the countryside for a week to finish his school assignment. Perhaps it's because of the area, but Ai, who is lightly dressed and boyish, doesn't seem to mind Toshiya in front of her. "I've long since forgotten about love." It seems she doesn't get along well with her husband. After asking Ai about tips for dating (hotel cumshots), he finds out he's a virgin, and from then on she teaches him about sex "only over his underwear"... Toshiya is stopped just before climax and can't stand it anymore!! And Ai also secretly gets her pussy wet in front of the young cock...