Kannin Shite! Otto no Inu Ma ni Okasareru Haramizuma Arai Mika

Mika is in her last month of pregnancy when she sees off her husband, who is leaving for an extended business trip.
During his absence, two hoodlums pay her a visit.
They use their dicks to scrape her vaginal wall as well as her belly, her breasts and the fruit of her pregnancy...
What will become of the pregnant Mika and her younger sister, Asami!?

[From DLsite English]