The Wedding Planner(2012)

Chae Ha Kyung gets divorced three weeks after her wedding and becomes a promising wedding planner in the next five years. She is given a mission that will decide the existence of the company; the wedding preparations of Eun Min Se, daughter of one of the biggest Japanese investors of the company. Min Se was brought up without a mother or siblings. Reckless and troublesome, Ha Kyung has a tough time taking care of her and is sensitive enough as it is but she finds out that the groom is no other than the man she divorced five years ago, Seo In Jae. In Jae suggests she puts someone else in charge of the project but she rejects the idea. This project will decide the position of branch manager for her and she couldn't risk it. Ha Kyung tells him instead if he had any feelings left for her, to suck it up and just walk down the aisle. That's the only way she can become a branch manager.