It was a bit complicate in the beginning since I watch sub because no translate. But i did not give up then I started to understand from episode to episode. Started to understand how broken the girl is and how she surviving. Another interesting point was how she hacked his phone so she knows every moves of him. That's so touching my hearts. then she changes from ignorance to love & care for him. The characters are all amazing in role themselves and it made me very heartbreaking in most scenes and it's also encourage at same time. I do love the both main characters, their facial expression are real. I cried so bad in 1 or 2 episodes before the end. The first most emotional drama i ever watch. It is worth to watch.