I just love this drama.

Let's start by saying that for a short drama, it's better than a lot of longer dramas I watched.
The production, photography and camera angles are just to die for. Really, it's difficult to find something this beautiful and cool. Add to that amazing fight scenes!
I love the cast, omg, I really love the cast. They are such good actors and the characters are amazing. Zhao Yi Qin is ideal for his role.
About the OST, it's so cool, gives everything you need to feel the depth of the scenes.
Now, the whole vibe is amazing, mystery with dark elements, angst, anger and then some sweet and warm moments.
It's definitely a roller coaster for your heart, you get so evolved with the story and find good plot twists within. I really like the story and complexity of it all. Just one thing wrong here: I got a bit confuse by the whole branch and heart thing for some time, but ok, I think I understood it later.
This whole drama is very similar to Butterflied lover, but it's not the same director, so I got confuse about it, I could sewer it was the same.