At first it was good and there was a mystery that happened decades ago that was the cause of the brothers conflict. Young Joon was treating her like shit and putting her into much stress for the past 9 years and when she snapped he realizes then that she was worth and fall for her. Let's say that is okay but after she first found out that Young Joon's brother was the one with her when she was kidnapped she was supposed to stop searching at that point even tho he couldn't remember anything from that time - yes he couldn't remember because it was painful for "him",so she should stop pressuring him to remember and just move on, start dating Young Joon, instead she keeps digging in because she wants young Joon to be the one there with her and that's because the director said so. After the truth was revealed the nightmare and trauma stuff just disappeared it's like "now that the the truth is revealed let's forget about it" like a phase and for the last 3-4 episodes I REALLY wanted to finish it fast so bad those episodes were unnecessarily long. The supporting characters' story, interaction was better in my opinion. That's what keeps me to finish it even tho I hate.