People Were in the Middle Ages, and the System Said It Was Demacia!

Bite! Congratulations on traveling to Demacia, which has been occupied for hundreds of years. The battle ax of Noxus swept across the continent, the Dauntless Vanguard Legion was completely wiped out, and the descendants of the Crownguard family were scattered to other worlds... Wait, didn't I travel back in time to the Middle Ages? What the hell is Demacia? Glenn looked at his thin arms due to malnutrition, and then at the golden "Make Demacia Great Again" on the system panel, and couldn't help but fall into deep thought. PS: This is not a realistic historical article, please don't click if you don't mind.