I Let You Inherit the Earl, but I Didn't Let You Start the Industrial Revolution.

[DND-like + Western Fantasy Lords + Industrial Revolution + Territory Construction + Hegemony + No System] Engineer Ryan traveled through time and became a down-and-out Earl. A dilapidated castle, a poor village, and a group of hungry people - this is his entire family fortune. Neighbors want to take over his land, businessmen are waiting to press for debts, and nobles are all watching his jokes. But what they were waiting for was kilns belching fire, waterwheels roaring, and workshops popping up; refugees rushing to seek refuge, and soldiers wearing armor forming an army. When steel and magic set foot on the battlefield together, the nobles who once carved up Lumen discovered: This poor count, whom they looked down upon, had become the person they should not mess with.