I will make you smile for sure

Sun-young, who is rich enough to be called the second generation of a conglomerate, was paralyzed in a hit-and-run accident five years ago. Since the accident, Sun-young has not had a single reason to smile for five years. Seeing Sun-young not smiling makes her feel bad, so Sun-young's secretary posts a job advertisement for a part-time job that requires a smile. Then, Yeo-ju, who sees the advertisement on the street, calls the secretary's number and starts working for a smile part-time job. Thi