Kneel for the Kingpin

In my world, I command boardrooms and shatter opponents with a single, cutting phrase. I wear control like a tailored suit of armor. But in his world, I shed my armor and kneel. He is Dante "The Saint" Moretti, a man whose sins are legendary and whose control is absolute. As the city's most feared kingpin, he navigates a world of brutal violence and high-stakes deals. But within the hallowed stone walls of a forgotten cathedral, he is not a kingpin.
He is my master. Our rituals are my sanctuary, his commands my freedom, our shared secrets the foundation of my world. But the walls of our sanctuary are not as strong as we believed. When a rival family discovers my existence, I am no longer a secret. I am a weakness. A target. A pawn in a game where the price of losing is my life. To protect me, the ruthless Kingpin and the meticulous Dominant merge into one dangerous protector.
His possession becomes absolute, his commands iron-clad, his solution a collar of solid gold that is both a promise and a warning. He wants to lock me away in his gilded cage, but our enemies are circling, and they don't fear the bars. He taught me the pleasure of surrender, but now, with danger at my door, kneeling is no longer just a game. It's a matter of survival. In a world of violence, our only salvation is found in total submission, but is even a kingpin's power enough to protect his queen when she's brought to her knees?