Kiss as My Blade

Vivian Lynn was killed by her husband and sister, reborn before her wedding. To get her inheritance, she must marry. She provokes Ethan Lancaster, her fiancé's youngest uncle. She marries for profit, he for fun. As she gets revenge, he protects her. Identities revealed, her ex-fiancé kneels and calls her his youngest aunt. This marriage helps her reclaim everything and find true love.