Main characters :

Jung Yun-Ho
Intelligent, serious, tall and handsome. He has an older sister, a brother the same age as him and a younger brother. Beside him all the others are born from concubines since his mother died two years after his birth. 
He is the crown prince of the guojung country but that doesn't mean his position his secure since he has a very ambitious brother his age annoying him. He is what we can call a “born leader”. He show no mercy to his ennemies or those who threaten him. 
he is hated and want to be killed by many people. most of them are his relatives.
But when he want he can be gentle and sweet. But only to those who are close to him. Sadly, they can be counted on one of his hand. His only friend is a boy he grew up with, called Qi FengHuang who also happen to be his most trusted aide and bodyguard. He is the only person he trust beside his annoying old geezer of a father, Jung Xiao Yi. 
He can’t put his faith on people he doesn’t know nor care about.
But once someone have been past his fence, they can be sure he’s going to like them. 
Well… as long as they don’t betray him, that is.

Qi FengHuang
Tall, calm, handsome and loyal. He is the trusted aide and body-guard of Jung Yun Ho, the crown prince. Man of few words. Has been with the crown prince for as long as he can remember. So he has acquired some personality trait of his master. even thought he is quiet, he can be quite ruthless and just like Jung Yun Ho, He show no mercy to his master's ennemies or him. if someone pass his master fence then that person can be assured of Qi FengHuang gentle attention and care. If not, well, they are as good as dead.

Shim ChangMin
Intelligent and beautiful but can also be a little mocking at times. He has one elder sister and four older brothers. 
Chang-Min, hates losing and is very competitive. He has a rather quiet personnality but once he is confortable around someone he is like a different person. He is more cheerful, child-like and quite mean. He really loves to bully his friends. But it might be best to not piss him off because if you do he will kill you in the cruelest and meanest way while a dazzling smile bloom on his lips. his familly worship the ground he walk's on. Especially his brothers. It is no secret in the entire Shim clan that the four brothers have a strong brother complex. And its annoy the out of changmin but he put up with itsince he doesn't have any other choice. 
He has two best friends who are also his body guard called Cheng Ren Yan and Cheng Ren Ling who sigh everytime because they think theirs master really doesn't need theirs protection. 
No one beside the Shim clan has ever seen the youngest child face. But they have witnessed his martial skill and most of them were glad the sword in his hand didn't land on their own skull in the battlefield. 

Cheng Ren Yan and Cheng Ren Ling
the Chen twins come from a branch family of the Shim. They have come to the Shim by a summon from Shim Li Chen to gather all the youngster from the sub clan. Only the best would stay to protect his youngest son. The twins were the best and strongest of them all. The twins are the bodyguard and aide of Shim Chang Min since younth and are lder by three years(the legend said that one day the master of the house Shim Li Chen came to them and said with a dead pan tone that they must gave their all in protecting his minmin from bad people aka ert who are after his beauty and that was their highest mission. When they heard that the twins cursed all the insult they knew at him without caring about their life). They like pretty girls, liquor and cursing. They goof around but once they switch to work/killer mode dont be in the way...