Hunted for Delivering the Wrong Order? No, I'm Here to Salvage Parts

With the city's magical barriers collapsing and mythological creatures invading, the world is on the brink of disaster. A short-tempered mechanic with no superpowers has a gift for hearing the resonance between machinery and the bones of divine beasts. He refits broken divine artifacts into everyday tools, dismantles monsters through sheer physical force to harvest their parts, and eventually transforms the city's entire infrastructure into a giant trap for the gods.