To be honest, I don´t really get why this Manhwa has such a high ratings. Sure, it had a decent plot and nice characters, but I just couldn´t get myself to like it wholeheartedly. Why? well, I will try to explain that as much as I can.
Basically, I considerd this to be a lighter version of the manga Berserk, but unlike Berserk it became boring after 10-20 chapters or so. Don´t get me wrong, this Manhwa was good, but lacking in many areas. For example, some of the characters was not developt enough and they could easily fade away from the memory. Sando was one of them, she was one of the main characters but I could still not really remember her after she joined the Aji tae team. I didn´t feel like it was something missing, and that proves that Sando was not fully developt.
Now to the Spoilers:
Sigh....Munsu. I really liked him, I really did. Until the authors decided to put a woman in his life and make him a love-struck man. Sacrifice your health and take over her sickness....I mean...Really? That´s too much Shounen for me to handle, and this is considerd to be a Seinen manga. I just couldn´t stand this whole romance thing going on either, it felt so incredibly cliché that I didn´t....know what to think.
The endning was good though, so you don´t have to worry about that.
Either way, this manhwa may be considerd as...pretty dark by some people, but It could´ve easily passed for a more darker Shounen, because there wasn´t that much of a explict or gore content in it ( In my opinion ).
I´m giving this a 6 because I felt it was incomplete, I also felt that it had many plotholes that could´ve maid this Manhwa even better if covered. I don´t know if there was some problem with the sales of this manhwa or something, but the ending felt a bit rushed ( Although it was pretty good ).