Princess Thetis of the Carnes Empire was dreaming of her bright future—her wedding to her beloved fiancé, Romain.

But one night, everything collapses.

After urgently granting her seal at Romain’s request—he claimed her parents had been attacked by an enemy nation—Thetis’s older brother, Crown Prince Theodor, is falsely accused of treason and executed.

Romain coveted the throne. Using Thetis, he eliminated the imperial family and seized power for himself.

Confined to a monastery by the newly crowned Emperor Romain, Thetis falls into despair and nearly takes her own life… but in that moment, she vows revenge and secretly returns to the capital.

Forced by Romain to take the role of Empress, Thetis suddenly comes face-to-face with a familiar face from her past—one she had buried deep in her heart.

He was never supposed to appear again.
His presence was never part of her plan.
She cannot allow an old, broken bond to interfere with her revenge.