I was just browsing C-dramas when I came across this. I always love spy movies and dramas, so I decided to give this a try. The number of episodes made me hesitate but I decided to watch the first episode and see how it goes. The first episode got me hooked! As I watched, it got more and more interesting. Before I knew it, I was halfway through the drama. The drama is fast-paced, not a moment was boring. The plot is quite unpredictable too which makes it more interesting. The characters were mysterious at the beginning. So you have to guess the real identity of the each of the character and whether they are the good guy or the bad guy. The soundtrack is great too. I would listen to it over and over to reminiscence some of my favourite scenes. Overall, I'd definitely recommend this drama if you love suspenseful action packed drama with a bit of romance. I said rewatch value is 8 because the storyline is really well made that it was not confusing. So I don't see why anyone would need to rewatch the whole thing.