Tsubaki, a wife who decided to have sex with a man she found online who advertised "sperm donation" at the request of her husband who wants a child but is infertile. Tsubaki, who doesn't break her prickly attitude, saying "It's just to get pregnant" and "Don't touch my body, stop kissing," to that man who is better than her husband in both physique and education, but that man was overwhelmingly excellent as a male, and was different from her weak husband in every way. As she is forced to creampie repeatedly by a man with a huge dick, endurance, and technique, the throbbing in her uterus gradually grows bigger...