I have never been this obsessed over a Kdrama, and I rarely give a perfect 10 to any drama, I always find flaws. All the right ingredients are already in: thriller, tragedy, suspense, romance. Each episode glued me to the seat and I couldn't stop watching. YouTube platform is here for the blame as it was the one who filled my feed with videos of the series, at first I wasn't sure I want to watch it, but it captivated me more and more and it took me less then 2 days to finish it. It's the first Kdrama I see with Seo In Guk but he gave such an amazing performance and had an excellent chemistry with Jung So Min, its really rare to see it in Kdrama series. To summarize it I will say it that it was EPIC.