At the request of her husband, who is infertile but desperate to have a child, Tsubaki, a wife, ends up having sex with a man she found online who advertises as a "sperm donor." The man is bigger and better educated than her husband, but Tsubaki maintains a harsh attitude, telling him, "It's just for the sake of getting pregnant," and "Don't touch me, don't even kiss me." However, the man is overwhelmingly superior as a man, completely different from her feeble husband. He has a huge penis, incredible stamina, and technique...