For me personally, I like the story behind the drama. It certainly got some twist in there that I didn't catch on early in the movie. I really liked how the main actor Kim Da Mi portray her character as Ja-yoon. I would certain would rewatch this when I need to watch something action. I am certainly hope they would make part 2, since the title has part 1 in it.
I guess why I didn't rate it higher would be that there was alot of pausing and talking through out the fight scene. Scene keeps on switching and it took me awhile to get what was going on. I'm hoping that it because it's the first part hence all the explaining. And if there is a second part, there would be alot of more action scene. Kim Da Mi fighting in this movie was freaking bad ass. Love it!!