Ryo, a wife who recently feels that her husband doesn't see her as a woman, starts a personal gym in order to impress her husband. - Once a week, I have private lessons with Alex, a young black man, in the afternoon when my husband is away. - Ryo feels a man in Alex's strong body. - On the other hand, Alex is attracted to Ryo's sexy body. - One day, after finishing the gym, I happened to look at Alex's body and saw that his erection was so big that his pants were about to burst...