THE 8-HOUR DROP: DEADLY DELIVERY

Here's the English translation of the story summary:

In a cyberpunk city ruled by corporate algorithms, the lives of the underclass are nothing but cold lines of debt code. Rian, a former Marine Corps instructor, now scrapes by as a delivery rider in a worn-out yellow uniform — all to keep his sister Anna's medical pod running.

One stormy night, Rian accidentally comes into possession of a "nano-core" serum, making him a target of the corporate Black Ops enforcers. On the verge of death, the serum vial shatters and the glowing blue nanites seep into his veins, awakening a supernatural ability: Spatial Swap. Within his line of sight, he can instantly exchange any two objects of similar volume. But the power burns blood sugar, and each use spreads the phosphorescent blue vein network closer to his heart — one miscalculation, and his heart will rupture.

He swaps a barcode scanner for an impact rifle to blast an enforcer away, trades a fire extinguisher for a war hammer to crush a mecha