Mira Fenya had aspired to become a battle mage defending her homeland, only to be betrayed on her graduation day. Her fiancé, Tristan, seized control of her family under the guise of the "Bride Program," forcing Mira to be presented as a bridal candidate to an enemy lord as his plaything.
Mira seized an opportunity to escape this sinister scheme, only to unexpectedly discover that Lord Derrien Derwood—the enemy noble suspected of murdering her father—was also involved. She sought revenge against the dragon-blooded Derrien, unaware that he had infiltrated the program to destroy it from within.
When bridal candidates began dying one by one in mysterious "accidents," including Mira's closest friend, she had no choice but to ally with Derrien to hunt down the true killer. As misunderstandings dissolved between them, animosity transformed into ardent affection...
From sworn enemies to intimate lovers, their bond is tested when both her former fiancé Tristan and the enemy crown prince Ryden enter the fray, each vying to claim Mira for themselves. Now Derrien has transformed into a black dragon—but which fate will he carry her toward as they soar into an uncertain future?
