Harry Potter: Eclipse. - Chapter 36:

If he wanted to boss around, he could do whatever he wanted. I would continue to farm, but if he tried to attack me, then he would not live to see another day.

Zhao Hai was a shut-in until he was transmigrated to another world with a farm and taken over the body of a fallen noble. The land that the noble had was one that could not grow anything. He also had a fiance who was the heir to a principality. To make matters even worse, he was talentless in martial arts and magic where he couldn’t even learn both.

“So what if I can’t do magic? I have my farm. Let’s see you try and attack me! I’ll let my bugs out to devour all of your military rations! I’ll put pesticides in your water source and grow weeds on your land! Let’s see you try and attack me after that!”

“What? You’ll hire assassins to kill me? Try and do that when I’m hiding inside my farmhouse. Once that is over, I’ll rid your country of all your food sources! Your citizens will come after you instead of you coming after me!”

The shut-in had a slightly foul personality. This is a story of how he, and his farm, became a nightmare to the people of a world of swords and magic.

Starting as a fallen noble? Struggling with hunger? Having to pay high taxes to the king? If you don’t pay enough, your head will be chopped off?Romon activates the Lord Simulator and begins with a village...[Your subjects discover a large amount of magic crystal ore while digging on the western side of your territory!][Your territory's culture improves, and your rapid-fire mage develops: Orbital Magic!][You successfully expand your territory and discover an underground labyrinth city on the new land!][You annex the land and gain a new title: Duke of Thune!][The king passes away, war breaks out, and you decide: to annex all lords and establish a new kingdom!]Romon: “Annexing the world is for better simulation, leading the world to ascend efficiently—how can you call it personal ambition?”

The person whom the world revolves around.