Tainted Opal - Kaz Brekker x Reader

Kaz Brekker may be the unbreakable Bastard of the Barrel, but everyone has a weakness. The only way to get to that weakness is a tell.
Y/n, a seductress who hides her skill under her luxury jewelry company in Ketterdam. When her most prized possession, a opal ring with poison properties is stolen by her business partner, she thinks of Kaz Brekker, the perfect man for the job.
Long treks reveal people, but more specifically; their pasts. The secrets and lives of the crows is jeopardized by this heist, but y/n has the kruge to drive a hard bargain.
Little does she know that the Barrel's favorite bastard may just be the broken man to her broken woman.