Deranged (2012)

Jae Hyuk (played by Kim Myung Min), who is a medical doctor and a clerk in a pharmaceutical company, was persuaded by his younger brother Jae Pil (played by Kim Yong Wan) to speculate in the stock market in the early years. As a result, he lost all his money. Now he is committed to working as a salesman for a pharmaceutical company with no prospects. I humiliate myself outside and act based on my clients' faces. I can only vent my frustrations to my wife and children at home...