My Scrap Metal Twin Blades Shouldn't Be This Overpowered

Ye Xiqing conquered one world as a legendary war god, only to be ripped away from his hard-won glory and thrust into a brutal new reality. In this apocalyptic era, monstrous beasts reign supreme while humanity clings to survival through awakened abilities. The cruel twist? Ye Xiqing awakens with the lowest F-rank power imaginable. But when a mysterious Killing System activates with his first kill, those worthless scrap metal twin blades in his hands begin defying all logic. Every enemy slain makes him stronger. Every battle pushes him closer to reclaiming his former might—and surpassing it.