Let's Divorce. Don't Slow Me Down from Drawing My Blade

After an accident left her grandfather critically ill, Zhang Xue discovered she had been promised in marriage as a child. Desperate to get access to medical resources quickly and save him, she contacted her intended and agreed to honor the engagement once her grandfather was out of danger. The two divorced just a few months after getting married. Later, they ran into each other somewhere neither expected, only to discover that their ex-husband and ex-wife each had another identity.