Kira Lucheron
An influential noble, a particular friend of Prince Joon. Her influence is quite strong in the royal family that she can order all three princes to set aside their work to spend time with her. She also sees to Sei-Ann accompanying them on a horseback ride out in the country. It is said that she is a crown princess and is first introduced as a boy. She also got jealous of how Sei-Ann was treated by the princes, so she sabotaged her for a bit. She stops though and ends up helping Sei-Ann a bit later on in the series. It is later found out that Joon dumped her, and hinted that she still might like him.