A pregnant wife who wishes to donate sperm said, ``I just want a child.'' She had a prickly attitude, but the long dick thrusting up her cervix made her cum repeatedly, and she turned into a masochistic woman who jerked her hips and begged for a piston in her vagina.

Tsubaki, a wife, ends up having sex with a man she found on the internet who claims to offer ``sperm donation'' because of her husband's desire to have a child, even though he has no seeds. When the man, who has a better physique and educational background than her husband, Tsubaki says, ``I'm only here to get pregnant,'' and ``Don't touch me, and stop kissing me.'' Tsubaki maintains a prickly attitude, but the man is overwhelmingly superior as a male and is completely different from her weak husband. The tingling in her uterus gradually grows as she is forced into an unknown pleasure by a man with a big cock, an unparalleled sex, and a skill, and as he repeatedly cums inside her...