My Cheat is a System Builder

In a world consumed by the endless tide of darkness, humanity's last bastions flicker with the dying light of civilization. The sun has vanished, and only the fires of castle forges hold back the encroaching abyss. But one man possesses an impossible advantage—a cheat ability that doesn't just grant power, it builds entire systems. As intelligent races fortify their ramparts against the shadows, he alone can architect the tools of salvation... or domination.