The Dragon Oath by Megan Linski

Soulmates are destined to be enemies.

Emma:
Last semester, I failed the man I love.
The kingdom is in jeopardy, and I’m a pawn in a conspiracy that will overturn the entire country. To save the people I love, I must play the cult’s games… and wear a mask to become the city’s most dangerous assassin, the White Rose.
My life is in danger each time I stop Ethan’s plans to protect the realm, for if he succeeds in saving Malovia, his own life will be forfeit. But I must keep the identity of the White Rose a secret, even from my mate. If Ethan discovers I’ve become a vigilante for the dark side, we’ll pay for it with our lives…

Ethan:
The realm has been cast in shadow. My evil cousin and his venomous mate are ravenous for the throne, and if I don’t prevent their coronation, everything the fae stand for will be lost to war forever.
But the gods seem determined to curse me, for they’ve put a cunning assassin in my path. The White Rose has thwarted every chance I’ve had to restore my honor and keep my kingdom safe.
The mystery has begun to unravel. I will discover the woman behind the mask, even if it costs me everything.
The White Rose will fall. And it will be by my blade she meets her fate…