Henderick, Sian
The real crown prince. At first he tried to help Sei-Ann get closer to Prince Joon but it turned out that the prince Sei-Ann was looking for was Sian. He ordered Sei-Ann to spy on Joon although it was against her will. Shion, Yu-Jen, and Joon share the same father, but Yu-Jen and Joon have a different mother. Shion's mother, Adelle Morianne, is dead but Joon and Yu-Jen's mother, Lorraine Muirla, is alive.And he also claims that Sei-Ann's prince is him and only him. [Source: Wikipedia]