After everyone in the city suddenly died, Jacob thought he was the sole survivor until he ran into his boss, Tessa.

A world where the birth rate of human males has dropped to 1 in 5,000. In this society, any woman who wishes to become pregnant must obtain a government-issued Fertility Band (Proof of Fertility) and wear it at all times. This signals to the few remaining males that she is actively seeking to conceive. In essence, any woman wearing a Fertility Band is ready to engage in “”reproductive activities”” at any time. ——————————————————————————————- It was a day like any other, just a normal commute to school… The train our protagonist, Sato, rides has become a hotspot for women eager to secure valuable semen. Every day, he gets to choose from his own harem based on his mood—ready to reproduce!! A law was enacted to protect the survival of the human race: ejaculation must occur inside a vagina. Not once has Sato failed to follow this law…

In a world where emotions spread like a plague, every human feeling is monitored and suppressed by an all-controlling system.
But one day, a defect is born—someone whose emotions cannot be contained.

In a dystopian society, where the line between science and crime has been blurred, the black hounds are on the case.