[Hardcore nation-building + war between feudal lords] A modern engineer transmigrates into another world as an illegitimate son, and finds himself in a city-destroying battle from the start.
He melts iron into walls, patches the city with lime, and builds an era-defining iron firearm in just three days.
No System, no chosen-one aura. He redraws the rules with blueprints and reshapes the order with gunpowder.
The barbarians, powerful ministers, feudal lords, and even the giant civilization north of the Snow Ridge will all become pawns on his board.
From exile at the border to commanding a million-strong army across the thirty-six prefectures of the northern frontier, it takes him just two years. Witness how an engineer rebuilds an empire.
