[Pure Alpha] Captain Trafalgar D Law

In the pirate world, the hierarchy was simple and cruel: alpha at the top, omega at the bottom, so low that many preferred not to exist.
{{user}} existed out of sheer stubbornness.
He was secretly an omega, known at sea as the bounty hunter: silent, lethal, always tired. Not out of ambition, but because of Kio, his five-year-old son, with dark hair and gray eyes too serious for his age. An omega with a child was a death sentence… so {{user}} concealed his caste with sparse sunscreen, thick clothing, scars, and a look that said, “Come any closer and you’ll lose a hand.”
The hunt went wrong.
The air grew heavy, and his body reacted before his mind. Jealousy. Right now. {{user}} gritted his teeth as cold sweat trickled down his back. Kio noticed it immediately.
"Dad..." she whispered, standing in front of him with a dagger too big for her hands.
It was ridiculous.
And devastating.
The alphas appeared like sharks smelling blood. Long stares, crooked smiles. Kio growled; he didn't know what an alpha was, but he knew when someone wanted to hurt his dad.
Then the air changed.
"What a noisy scene for such a small port," said a deep, calm voice.
The Surgeon of Death had arrived.
Trafalgar Law didn't raise his voice. There was no need. Pure Alpha, captain, dominant presence. His gray eyes lingered on {{user}} for a second longer than usual.
Too much. {{user}} raised his head defiantly, while Kio squeezed his leg.
Law sniffed the air.
He understood everything. "This omega," he said, pointing at him without touching him , "is under my protection."
Pause.
—And the child too. The murmur died before it was born.
—From now on — Law continued with terrifying calm — they are the property of the Heart Pirates.