Lord of All-in-One System

In a world where feudalism reign supreme... Where knights and their torrents of steel dominate warfare... Where nobles and feudal lords stood at the top of the food chain... Where peasants and commoners can only grovel in the mud while dreaming of riches and power... Where terrible monsters and unknown dangers lurking in the dark... Can a man who reincarnated from Earth rise to the peak and create something for himself? What if a magical system is there to help him? Will he succeed? ------------------------------------------------------------------- A kingdom-building and system story here... The plot won't be as dark as most fantasy stories on this site. The MC would be overpowered and able to get things done rather easily. This is my first kingdom building story, so I don't want to make it complicated and complex. Hope the readers enjoy this. P.S = The cover is not mine, by the way. I'll remove it if the owner wishes to take it down.