Betrayed at the Altar: My Billionaire Savior

In her previous life, the heroine was brutally killed by her scumbag husband and her manipulative green-tea younger sister. Waking up to find herself reborn five years earlier, right before she was arranged to marry the scumbag, she resolutely flees the wedding without the slightest hesitation, then turns around with a carefully prepared marriage contract in hand, and knocks on the door of the scumbag's biggest archenemy — the cold, aloof and overbearing top billionaire.