With closed eyes, Reign's mind was consumed by visions of mechanical engines as he dug deeper into the upgraded blueprint for his Skull Grinder.
Reign found a valuable book—a car engine repair manual left behind by the survivors, perhaps kept in anticipation of the need to repair car engines or even generators.
It offered simple explanations and diagrams for fixing engines, a practical guide for anyone needing to tinker with their machines.
But for Reign, the engine repair manual proved to be more than just a practical resource—it held knowledge he needed.
It might seem a bit off for Reign to study machinery despite having a mutation system, but he believed it was the right path.
Inspired by the fact that human inventions often mimic nature, like planes borrowing from bird flight, he saw a chance to merge the capabilities of his mutation system with modern science.
