Ember by Naima Simone

He’ll burn it all to keep her.
Her fire will consume his soul.
Today, my father gave me the perfect gift: he died.
But he left my legacy, the multibillion drug empire, to pure evil—my stepbrother, Asad Prince.
Petty even in death? Two can play that game.
As the last Cross, I’ll leave it all behind. And I will have the last laugh too: I’ll take the formula for the drug I created with me.
It’s the perfect plan until Asad makes his final move—marry him, or everyone I love dies.
A deal with the devil. Until he reveals his secrets.
His obsession might have always been my freedom.
Now, Asad might rule with fire.
But I’ll light the match.