Race:
Hard Man: An enhanced version of various indicators of a normal male in the 21st century. After cosmic radiation and evolution, he can transform into an animal state.
Subspecies: A normal male in the 21st century who has certain reproductive functions and can transform into a half-animal. The main dependence of future human reproduction.
Shark (human): A normal male in the 21st century, with complete reproductive organs, similar to a female in the 21st century. He cannot be transformed into a beast. He has an estrus period. He usually reaches adulthood at the age of 18. When he is in estrus, his lower body turns into a fish tail. The quantity is rare.
Environmental background:
At the end of the 21st century, the earth is ushering in the end of the world. The virus is rampant. First, human women are infected by it, forming a kind of unconscious life form that feeds on the flesh and blood of animals. All creatures bitten by it have become their kind without exception. Humanity has ushered in the biggest doomsday in the history of civilization. Many humans have spontaneously formed small teams to try to spread the fire of human life. Eventually, some physically strong humans became immune to virus infection after merging the genes of animals and plants, and they became the main force in the fight against viruses. But in this confrontation, many humans who did not integrate genes in time also died. Jin Duoduo is one of them. Fortunately among the misfortunes, his spiritual body was drawn into the space-time tunnel, and he was reborn in the body of Jin Duoduo, a young man in the 72nd year of the New Calendar of the Great Universe Era. Unfortunately among the misfortunes, Jin Duoduo was a wild mermaid who was about to turn 18...
In this future world, what challenges will Jin Duoduo face?