Steel Nirvana

In his previous life, he was the lowest-level mecha repairman in Ark City. After ten years of building mechas and saving thousands of lives, he was shot in the head by Gu Tianlin, the adopted son of the city lord, just because he discovered a secret. Before he died, he realized that the end of the world was not a natural disaster, but a man-made disaster. Reborn ninety days before the virus outbreak. In this life, Qin Shuo returns with ten years of apocalyptic memories. He wants to build a mecha that can restrain mutants before disaster strikes, expose the conspiracy of hypocrites, and fight his way out of the mountain of corpses and sea of ​​blood. "Gu Tianlin, you owed me your life in the last life, and you will pay it back with interest in this life."