Yujae Seon is a member of the 1st Generation and is the other King of Incheon,leader of the Dark Faction.Yujae is a calm and centered man who always shows a calm and relaxed appearance, but this only masks his real proud and confident personality, valuing personal gain more than principles that he calls "Romanticism" because he knows the value of Incheon and believes that he deserves a good compensation for his help.Cunning and smart, a manipulator for his own purposes.Dislikes Na Jaegyeon.