The only problem with this movie is it's length. Two hours counting is way too much. Kind of got a bit tiring after a while. The special effects were a problem at the begining, but they got really better after a while. The performances were good as well and the story was touching and emotionaly, especially the brother's story. The guy was a bit too much of a mama's boy, but it wasn't that big of a deal breaker. The action scenes and the costumes, finally were good as well. Lastly, my fav actor, Kyungsoo did well and had good drama scenes. So, 7 out of 10.