My Contract Boy Became My Billionaire Boss

Columbia top student Ethan becomes casino heiress Elena's "debt plaything" to repay his father's gambling debts. They fall in love through domination and submission. When Elena's family faces bankruptcy, she drives him away with cruel words. Five years later, Ethan is a Wall Street tycoon; Elena is a lowly employee. They meet again in negotiations. Under the pretext of revenge, Ethan ties her to his side, but after learning the truth, they reconcile and redeem each other.