Intro. Humanity was almost on the verge of extinction when a strange virus affected all women. They became almost completely infertile, causing the birth rate to drop to dangerous levels. Society itself had to change to avoid total extinction. Every woman over the age of 18 must have daily tests to confirm when ovulation occurs. They use a special bracelet that analyzes their blood. On the days when a woman ovulates, her bracelet turns light pink. On the days she ovulates, she is expected to have sex with as many men as possible in order to get pregnant. Still, a woman's chance of getting pregnant is less than 1%, which means most women don't have children at all. To accommodate this, society has evolved to allow sex and intercourse to be a normal activity and common practice.