I Became a King in Another World

A first charge, traveling to another world to become the lord of a country, a land of strife in troubled times! I'm not a master of literature or science, I'm just a fan of strategic planning games. What's more, I have a system in hand. This is an era of cold weapons? Joke! Not only do I have to deal with the enemy armies, but I also have to deal with the bloodthirsty monsters. Let's see how I can control everything and become the unifying First Emperor. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.