I Decided to Give the Contract to the Male Vassal

Cheongrin, once the head of the Heavenly Tiger Alliance’s intelligence organization, lost her martial arts and retired from the martial world.
While wandering, she took in a disciple who became her very heart—Baek-Ah.
One day, Baek-Ah was abducted by mysterious assailants from the Heavenly Tiger Alliance.
Cheongrin died while trying to save him.
When she opened her eyes again, ten years had passed.
She had been reborn as Jeok Heerin, the eldest daughter of the Jeok Clan of the Snowy Mountains—someone who had been imprisoned for a decade as the prospective bride of the Yeomhwa Clan of the Demonic Cult.
“The next Heavenly Demon will be born using the womb of the Snow Mountain Jeok Clan.”
To fulfill this secret prophecy left behind by a Demonic Cult sorcerer, Heerin—whose martial arts had also been crippled—had been captured and confined.
Soon, she was destined to marry a brutish executioner of the Yeomhwa Clan and bear his heir.
Stop.
At that moment, Heerin discovered a hidden secret of her own.
And her martial arts were supposedly crippled… weren’t they?
For now, I’ll block the marriage with another marriage.
The man she chose to replace the groom was Wei Cheonso, the third young master of the Demonic Cult—feared as the “Mad Hound,” yet cold-headed enough to become her ally.
“If I marry you, how do you intend to repay this favor?
Killing the bride right after the wedding would be easy for me.”
Despite his words—
“I’ll give you the position of Young Cult Leader.”
Using the knowledge and strategies she once possessed as part of the Heavenly Tiger Alliance, Heerin secretly began to maneuver for control of the Demonic Cult itself.
Thus, a blood-stained wedding took place, with the groom replaced.
As the wife of the Third Young Master, Heerin joins hands with Wei Cheonso, devoting herself fully to seizing the Demonic Cult—and avenging Baek-Ah.
Then—
Baek-Ah… is alive?
An unexpected truth comes to light.
And Wei Cheonso is thrown into confusion as well.
Have I been longing too much?
Why do I see the shadow of my late master in my contract wife?
Amid the chaos, one thing becomes certain.
For both of them—
They must seize the Demonic Cult first.