Gray Mist Anchor

When the gray mist descended, everything began to mutate. Alien gray mist swept across the land, reducing cities to ruins, unleashing monstrous beasts, and collapsing all order. Lu Ye, a former engineering rescue worker, was betrayed by his companions in the seventh month of the catastrophe and abandoned in a crumbling building. On the brink of death, he awakened the [Biological Anchor]. He could analyze the tissues of mutated creatures, modify weapons, and strengthen his body to survive in the perilous wasteland. But this power came with a fatal cost—every use deepened the alien corruption, and the more he used it, the closer he came to losing his sanity and becoming a mindless monster. Within the ruins of Jiangcheng, resources were precious. Raiders killed and looted, survivor camps clashed, and the darkness of human nature was far more terrifying than the mutated beasts. Lu Ye gathered a few trustworthy companions, suppressing the growing beast within him while desperately scavenging for supplies and setting traps to take revenge on those who had betrayed him. Together, they broke through the fallen city and headed for the ark shelter walls that humanity yearned for. They thought they had found humanity's last pure land, but they uncovered a conspiracy hidden behind the walls: class oppression, secret human experiments, and the base's high-ranking officials had long known the truth about the gray mist and even sought to control the power of mutation. — Description from novelcodex.org