The Son of the Earl at the Beginning, I Want to Control the World's Soldiers and Horses

Leonard Rock, the son of Earl Erwin, lord of Golden Kwai Town. With the death of Baldwin IV, the Golden Kwai family also gradually declined. The newly appointed King Baldwin V was manipulated by the nobles of the Kingdom of Cadia, and the entire Kingdom of Cadia was in a haze. As the saying goes, heroes emerge from troubled times. What kind of story will our protagonist Rock write in these troubled times?