Prussia/Norway is an uncommon yet somewhat historical pairing. It consists of the countries Prussia and Norway. The name is either PruNor or sometimes PruWay. This particular pairing is popular to the more historical fans because of the many years of war and alliances between Norway and Prussia. However, in the anime, they are never shown together, creating a gap between history and anime. The most popular headcannon for this pairing is the Prussian/German invasion of WWII. But, not much is known about their relationship during the time and before that.