ChloeWid
This story takes place in Romania, the birthplace of vampires, where there is currently a vampiric monarchy. Antonios Dracul is the son of the Vampire King, making him the prince of the kingdom and the heir to his father's throne. In this place, the supernatural are open about themselves, and the humans are afraid, so they worship the King as well.
Upon nearing 1600 years of age, Antonios's twin sister and himself must go through a ceremony where they taste human blood for the first time and finally become full-blooded, rather than fledglings as they have been for their entire lives.
The humans the twins are presented with to drink from and turn into their Thralls happen to include a werewolf with weak blood who could not be detected by the other vampires. When the lycans find out about their brother being killed, they prepare to wage war on the vampires, and everyone must take sides. However, Antonios finds that the mental link that had been created between him and the human he'd fed off of during the coming-of-age ceremony was affecting him. He sees what is wrong with his kingdom, and is willing to fight against his own kind. Which side is really the wrong side?