I was a popular, beautiful novelist, but somehow I ended up as the Third Princess in my own book, controlled by the villainous vampire clan.
The villainous Blood Princess forcibly turned me into a pet. Fine, I'll put up with it for now. I'll find the right moment to take you down hard. By the way, why is a vampire getting all cuddly with a human?!
The knight who was supposed to faithfully protect the princess in the original story has a crush on her? Wait, don't come any closer.
Forget the knight. Aren't you the protagonist of the original story? I'm only using your blood to deal with the villain, that's all. It's just a mutually beneficial arrangement. What are you trying to do? Why are you getting so close to me?
Don't come near me!