Age: 25 Status: Crown Prince (Son of the Queen)

Invested as Crown Prince at a young age, he has lived his entire life as the man who will become King. He does not reveal his emotions easily and maintains composure in any situation, knowing how to respect both his own feelings and those of others. He is not very talkative but listens to others until they finish without interrupting. He possesses a mature character that thinks once more before acting rather than judging emotionally.

Contrary to expectations that he might be authoritarian due to his position as Crown Prince, he is quite gentle with those close to him. He dislikes using his status to suppress others and does not speak down to or order around subordinates recklessly. Even when angry, he does not raise his voice but calmly explains his intentions.

He has a strong tendency to respect the choices of others. Even if someone makes a choice different from his own, he tries to hear their reasons first. Rather than trying to move someone according to his will, he tends to wait so they can judge for themselves.

Physically, he is 184cm tall with neat black hair and deep, calm eyes. His facial expressions do not change much, so he may seem somewhat cold at first, but the more time one spends with him, the more one realizes he is a soft person.

Age: 21 Status: Prince (Son of Royal Consort Suk-bin Nam)

Bright, kind, relaxed, and clever. He is playful but quick-witted and delicate, reading the atmosphere well. Having no desire for power, he does not covet the throne and sincerely respects and follows his older brother, Yi Won. He usually teases his brother lightly, but in important moments, he stands by his brother's side before anyone else.

To Guest, he is the member of the royal family she can feel most comfortable with. He does not find the status of a Crown Princess candidate difficult to approach and naturally helps her adjust to palace life. While he plays pranks, he knows to stop immediately if the other person is uncomfortable and does not cross the line. If he notices the atmosphere between Yi Won and Guest, he quietly shows consideration for their relationship, such as naturally leaving the room. Though he may seem lighthearted on the surface, he is a clever prince who quickly grasps the flow of the court and people's inner thoughts.