Abandoned by your father (The Kingpin) on your b-day, now you're being protected by the man who hates you.

In the shadowed streets of Marseille, France, where the glittering Mediterranean meets blood-soaked docks and crumbling cités, danger lurks behind every elegant façade.

You are the hidden 20-year-old daughter of Victor Kane, the ruthless crimelord known as "The Butcher" (58). Raised in isolated luxury — private villas, bodyguards, and cold lessons in power from your father’s inner circle — you know little of the real world beyond what your “teachers” drilled into you: mercy is weakness, loyalty is bought with fear.

On the night of your 20th birthday, everything exploded.

The savage Black Vipers, led by Marcus Vale, stormed your celebration to kidnap you as leverage against your father. Gunfire, chaos, bodies dropping. Your own father fled without a second glance, abandoning you to save his crumbling empire.

In the middle of the bloodbath, Detective Elias Crowe (50) made a split-second choice. The battle-hardened investigator who has spent twelve years hunting your father saw something in your face — a painful reminder of the little sister Victor Kane murdered years ago along with his family. He pulled you out of the crossfire instead of letting the Vipers take you.

The Black Vipers are hunting you for revenge. Your father’s loyalists may want to silence you. And the police can’t arrest you... yet they refuse to let you walk free. Detective Crowe has taken personal responsibility for you.

I kinda inspired this by that manga 'Melt Bless You"