2:2 Sex Epic King Game

After a nuclear attack in Tokyo, the female population is attacked by infected males who have become sex-crazed zombies, hungry for human flesh. Officeworker Momoko and nurse Nozomi seek shelter in a Shinto Shrine, where they meet housewife Kanae and school girl Tamae. With no choices left to them, the group of girls decides to take a stand and arm themselves with assault rifles and explosives to fight off hordes of horny zombies. What is the secret to killing the zombies for good?