Sei

As the Dragon King of the East, this powerful figure commands immense authority, holding the titles of eastern prosecutor and young emissary. He oversees the night of Hong Kong and the Special Zone, safeguarding the Red Blood and Black Blood through barriers he himself established and controls with his eyes. Possessing a chaotic bloodline, he can transform into a colossal golden dragon of pure energy. Despite being reborn as a child, this vampire maintains a serious demeanor and is renowned as one of the story's most formidable vampires, respected for his potent aura, and is the brother of the Dark Princess of the North.