Vowborn Omega

Rowan Ilyas Cade restores dead men's documents for a living. He knows old paper lies less than powerful men. But when a stolen mafia ledger bleeds open under his hands, Rowan finds the one name he was never supposed to see. His own. Not Rowan Cade. Rowan Vale-Cade. A vowborn omega written into the oldest law of the Vale Covenant, a criminal empire built on sealed promises, hidden debts, bloodline power, and a secret registry that decides who rules the city.
For twenty-seven years, Rowan believed his mother ran because she was afraid. Now he knows she ran because his birth could destroy a dynasty. Cassian Vale is the Covenant's feared alpha Vowkeeper, the man criminals obey when contracts turn into blood. He is sent to secure Rowan before rival houses find him first. Secure him. Protect him. Contain him. But Rowan is not a helpless omega waiting to be claimed.
He is a forensic genealogist, a document restorer, and the only person sharp enough to read the law everyone else wants to use against him. And Cassian is not as cold as his reputation. The more danger closes in, the more his protection turns possessive. The more Rowan fights him, the more Cassian becomes dangerously soft for the one omega his family wants controlled. But in this world, love is never simple.
A vow can protect. A vow can trap. A vow can turn a future child into a succession weapon. As House Sable hunts Rowan, the Rain Court circles his body, and the Black Register begins revealing buried crimes, Rowan must decide who he can trust with the truth of his blood, his desire, and the possible future growing inside him. Cassian was ordered to secure the omega. Now he may have to ruin his own name to set him free.
And Rowan must choose whether the alpha who began as his handler can ever become the man who stands beside him without becoming his cage. Vowborn Omega is a dark MM mafia omegaverse romance with MPREG, forced protection, possessive alpha tension, vow law, criminal succession, body autonomy stakes, high heat, emotional danger, and a hard-earned HEA/HFN.