A feudal treaty in which one side has no daughter, and two sons must be used.

Sapphire's little brother was not always the king of the palace. He had to go through many challenges to get where he is. He was once a small innocent child with a dream to be like his half-brother...a king of the Rosa Kingdom..but his little soft dream did not prepare him for the real world... This is the story of the highness himself... Dinamil