Kuwan

The captain of the guardians, also Shakuya's fiancee. He tends to act cold and distant, which Shakuya has mentioned. He is the 'replacement' fiancee that was put in the place of the then-lost Lucien. He doesn't like Shakuya's ventures out of the castle, and often does not listen to her when she explains why she is out (which is usually to see him).

Source : http://en.wikipedia.org/wiki/Two_Flowers_for_the_Dragon