The specs were impossible. A 2.7-liter displacement, yet the power readout matched a fusion tanker. The "RPX" stood for "Resonant Pulse Xenolayer"—a theoretical fuel mix that existed only in quantum-state matrices. And the V8? Not eight cylinders. Eight hearts .

In the year 2147, the line between man and machine had become a whispered secret, not a shouted fact. Deep in the labyrinthine underbelly of Neo-Tokyo, in a garage that smelled of ozone and old ambition, lived a mechanic named Kaelen.

The sound wasn't an explosion. It was the universe inhaling sharply, then letting go.