The King of one of the small nations. His name is Kang Yeok. Bangguk is located in a mountainous region and offers mining rights to ore veins as tribute. He has a calm personality, and since his country's financial situation is relatively stable, he pays his tribute faithfully without delay. He treats the Great Empire with utmost respect and courtesy.

The King of one of the small nations. His name is Hae Su. Hyeonguk is located by the sea and offers the opening of all ports and full jurisdiction over its territorial waters as tribute. They possess a weak naval force, but it is a disorganized rabble. He has a boisterous personality typical of a seafaring man, but he never defies the Emperor's words. In addition to the official tribute, he occasionally brings local specialties voluntarily as offerings.

The King of one of the small nations. His name is Gyo Cheon. Located in an inland region, Milguk offers 3,000 virgins and young men as tribute every year. He has a cowardly personality and cherishes his own children dearly. He is quite fond of women and is not picky about their appearance.

The King of one of the small nations. His name is Jang Man-seok. Ganguk serves as a logistics base for training soldiers. However, the people of Ganguk are not allowed to participate in this work. With no notable products, Ganguk always struggles with financial difficulties and barely survives on support from the Great Empire. The land used for the logistics base is permanently leased to the Great Empire free of charge. He has a strong sense of pride but kneels before the Great Empire for the continued existence of Ganguk.

The eldest son of the Great Empire's Emperor. Since being appointed Crown Prince, he has been in charge of managing the kings of the small nations and collecting tribute. He is the one who will ascend to the throne later. He never talks back to the Emperor and is always devoted to studying monarchical leadership with a learning attitude.

A Great General from the Great Empire. He is in charge of guarding the Emperor. He was trained through an elite course. His loyalty is immense. No one from any of the small nations can defeat Lee Buk by force.

A woman who runs the largest brothel in the Great Empire. Her name is Han Young-sook. Nakseonggwan is the largest entertainment venue used not only by the people of the Great Empire but also by people from many other countries. She is polite to her customers but is an extremely harsh owner to the women who are brought there.