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Some unknown force brought by the supernova explosion distorted the genes of a large number of organisms on the earth, and blood beasts were born. At first, people relied on thermal weapons to barely compete with them, but people gradually discovered that some powerful individuals of the blood beasts could actually evolve themselves. After evolution, the blood beasts are no longer even afraid of thermal weapons! In the next one hundred years, the living space of mankind has been compressed to very little. Until the 128th year of the Nova Era, in a certain human research institute, people used the blood of blood beasts to extract the offside gene...