Makiko Kojima, a married woman struggling with infertility, encounters her husband's younger brother Hideo at the fertility clinic. Unlike her husband who is uncooperative with fertility treatments and perfunctory in sex, Hideo shows genuine interest in Makiko and listens to her earnestly, making her open up and even give herself to him… Drawn to Hideo's passionate advances, Makiko's womb and vagina overflow with lubrication as she seeks pleasure from a forbidden penis. Overwhelmed by the intensity, she begs Hideo to release inside her. After intense internal ejaculation sex with Hideo, new life begins in the Kojima household.
