C70 Heart like a Knife Twisting

The blood rain was rich in 'HEK' virus, not only would humans react if they were exposed to it, 'HEK' was the purest and most precious energy used by long-mutated species like Zombie and mutant beast. After absorbing it, not only would they be fine, they would also greatly enhance their own strength.

Therefore, after this blood rain, the number of survivors will be reduced by a lot