Mechanical Girl: The Cold Goddess Asked for an Upgrade

The Story

Lee Chan-gyu arrives in a realm of mechanical girls, only to face betrayal from his partner over his F-rank status. Relatives seize his inheritance, leaving him destitute. He activates the God-Level Upgrade System and rescues Ha-jin, a dying E-rank unit. Upgrading her to SSS-rank, they confront the Machine Cult's conspiracy. The duo builds an elite legion to expose the plot. Their combined strength drives the campaign to save the world from the cult's grasp.