Apocalypse System: I Can Upgrade Any Weapon

In the first month after the apocalypse began, the world was shrouded in the shadow of a virus. The "Patient Zero Virus," which broke out in the Imperial Capital, devoured human civilization at an astonishing pace. Once-thriving cities were now nothing but ruins and wandering, mindless corpses. I, Li Ling, an ordinary internet cafe cashier, struggled to survive amid the apocalyptic tide. A mysterious Weapon Enhancement System appeared, granting me the power to change my fate. On the run, I met Mu Yanqing, Lin Qingyao, Gu Qingning, Xia Yubing, Shen Mengyao... Each of them was stunningly beautiful, yet trapped in dire circumstances. For survival, for hope, I will lead them across this wasteland and write a legend of our own!