Arcana Of The Dawn

The Royals, people born with great power. People who have black hairs, reflecting their black tainted hearts. They're merciless towards the weak and uses others to obtain more power.
The royal family Heartfilia reigned over the lands in the east, the kingdom of Fiore. The Queen gave birth to a princess with golden hair, a cursed color, in exchange for her life. Born with a different color, she was hidden from the eyes of her people. Shut in a tower with only a little window, barely allowing the entrance of sunlight. Not fed with the right amount of food. Her name was casted as a bad omen. Every living soul had hated her except for one. Her loyal dog whose strength exceeds humans'. A person born from a human and a magical creature- an Ajin.
Years passed, the princess has now come to the rightful age of marriage. Indeed, a wedding is perfectly planned.
But who will she marry? Is this the stepping stone for attaining her freedom or is it another open door leading to the gates of hell?