Kingdom of Dryer is a monarchy state ruled by a king and the princes take on political responsibilities as they grow up. The only known character from Dryer is Nahum Dryer who is, during the Gallian Civil War, a prince. Nahum Dryer's father, the king, sent him to study at Lanseal Military Academy to prepare him for his future role. Nahum later became the king of Dryer, succeeding his father.
Interestingly, Nahum's surname is also Dryer suggesting the royal family took the name of the kingdom as their name or the kingdom itself was founded by the Dryer family.