HMN-377 A married woman, Miho Mika, who came to a broken house for her husband who is unable to produce sperm, and indulges in intense seeding sex with a single man who accumulates sperm for 30 days.

To help her husband with azoospermia, married woman Yayoi Mizuki visits a rundown apartment and engages in intense insemination sex with a single man who hasn't ejaculated for 30 days. She actively seduces him, reveling in the pleasure of being creampied with massive loads of semen, gradually succumbing to forbidden carnal ecstasy and completely forgetting her husband's existence. The film depicts the wife's progressive fall under the ferocious assault of a man with long-accumulated semen, filled with immoral and climactic sex scenes.