This is, by FAR, the most heartbreaking, breath-catching, ugly-cry inducing Kdrama I have ever watched. The lead actors, both adult and young versions, have the ability to place you on a bipolar rollercoaster of emotions that will leave you weak and exhausted. The antagonist of the story creates an atmosphere of being stalked by an apex predator, the feeling of menace and dread similar to watching Jaws for the first time. Overall, if you want to explore your emotional spectrum and feel hunted, haunted and painfully inlove then this series is a must watch. Just make sure you have some tissue ready.