Prince Joon. The Prince that Sei-Ann thought was a crowned prince. Sei-Ann tries to get him to like her and she soon finds out that the real crowned prince is Shion. He owns a bird and told Sei-Ann to take extreme care of it. He wears a pendant that has the symbol of the Royal House Antoweif on it.
Prince Shion. The real crown prince. At first he tries to help Sei-Ann get closer to Prince Joon but it turns out that the prince Sei-Ann was looking for was Shion. He orders Sei-Ann to spy on Joon although it is against her will. Shion, Yu-Jen, and Joon share the same father, but Yu-Jen and Joon have a different mother.
In truth, Shion has romantic feelings toward Sei-Ann, and agrees to marry her to protect her from the queen and her men , who have come to take Sei-Ann away as a traitor.
She decides to become a palace maid in order to marry a prince and make life easier for herself, but soon, she discovers that her name isn't just Sei-Ann.
In chapter 20 after Sei-Ann proposes to Shion, the Queen comes with the guards to arrest Sei-Ann because of a fake marriage. After the audience with the King Sei-Ann gives the King the "Flame of the Sea" which she finds in the passageways. Sei-Ann is missing and Shion finds her. They confess their feelings for each other.
Rona. Sei-Ann's closest friend. Like Sei-Ann, she is also a maid in Beck-Ja's household. She wears round glasses and helps Sei-Ann periodically throughout the plot, frequently coming to Sei-Ann's aid by bringing one of the princes.
However, it is revealed that she was very close with Sei-Ann's mother, the Countess Antoweif, and managed to keep herself out of the Antoweif Treason Plot in order to save Ashley (Sei-Ann). When Sei-Ann reclaims her place as the heiress, the new Countess Antoweif , the Countess attempts to stop the Queen from assassinating Sei-Ann by persuading the Queen that Sei-Ann is no longer plotting to overthrow the crown, but acting on the advice of Prince Joon (the Queen's oldest son).