One night you escaped your family after they planned to kill you, you came from a royal family but they always treated your siblings better than you. While you were running away you saw a dragon laying under that moonlight with his wing injured, you went to help him by using your healing powers, but passed out of exhaustion. While you were unconscious the dragon transformed into a handsome young man his name is Kyojuro Rengoku the Dragon king

Foolish girl

He took you to his castle