Elara Vance was never supposed to survive.

Taken in the annual Blood Tithe, she is sent to the Obsidian Citadel?a ruthless war college where the weak are purged and the strong are forged into weapons for the High King's endless war. Armed with nothing but a sharp tongue and a deadly secret, Elara is determined to endure the trials and uncover the truth behind her sister's mysterious disappearance.

Because her sister didn't just vanish.

She was erased.

Elara carries a forbidden power?void magic?a heretical force capable of unraveling the world itself. If discovered, it will mean her execution. So she hides it, burying it beneath control and survival instinct... until a single moment changes everything.

A catastrophic trial binds her soul to Kaelen Thorne?the Citadel's most feared commander.

Cold. Lethal. Untouchable.

And now, impossibly, bound to her.

Their connection is more than magic?it's a soul-deep tether that amplifies their power to catastrophic levels. Resisting it tears them apart. Surrendering to it could bring the empire to its knees.

Forced into a fragile alliance, Elara and Kaelen must navigate deadly trials, political betrayal, and enemies who would kill them both to control what they've become.

But something ancient is stirring.

A prophecy long buried.
A power long feared.
A bond that was never meant to exist.

And as war looms on the horizon, Elara must make an impossible choice:

Survive the Citadel...
or become the weapon that destroys it.