I loved this drama. There isn't a better horror drama out there ^^
I don't want to be a buzzkill, but I'd argue that even as a whole drama, I still feel like there are better options out there. I can't speak for your tastes, but you should check out The Glory if you haven't already. It's by the same director as this drama, but it's far, far better in my opinion. Not a horror, but it's a thriller with slight romance. (no triangles)
Ah yes, nothing encourages more people to watch a show like spoiling more details about it. Genius idea.