Undoubtedly a happy ending. Book 1

Lee Yeon-woo and Kang Song-jae got married for convenience two years ago. And now the day of their divorce has come. Yeon-woo is happy about it because such a relationship burdens her. As she leaves the courtroom, the girl receives a message about a deposit of 1 billion won - the last gift from her ex-husband. And then, right before Yeon-woo's eyes, Song-jae gets hit by a car. After returning from the funeral, the girl finds a congratulatory card that her husband sent before their divorce. And it breaks her heart... The next day, Lee Yeon-woo wakes up in a familiar place - their home, a hundred days ago. It is the day when she wrote to her husband asking for a divorce. The girl decides to change everything and prevent Song-jae's death. Their real married life seems to be just beginning. Will Yeon-woo be able to save her husband and change the tragic ending of their story?