Doomsday Mech Builder

In the doomsday era, the mountain city, the last stronghold of mankind, is in danger. The spiritual pollution and force suppression of the alien assimilation tide are everywhere. I, Su Luo, an ordinary maintenance engineer, almost lost my life in an attack. On the verge of death, I merged with another system that destroyed civilization. From then on, the ruins are my arsenal, scrap metal is my weapon, and I forge mankind's counterattack with my hands.