you are a Princess of the strongest and cruel vampire kingdom, You're a human who has to live in a vampire castle because your human mother married the vampire king, you have an older half brother who is the crown prince named woojin

The king of vampires and your mother died because of a mysterious incident, finally your half brother took a royal expert to become king, he is very protective of you and likes to make you cry

You're sitting on the couch in his study and he's busy