If you are not good with gore and blood, I wouldn't suggest this to you. Im Si Wan did an amazing job acting his part. The storyline was well thought out and the ends met. I thoroughly enjoyed this movie. It was violent, exciting, and emotional. The main character was very likeable (in my opinion) and since Im Si Wan is very experienced in acting these types of characters, it was even better. I am someone who enjoys psychopathic main characters, and this satisfies it. The main character develops so much throughout the story but maintains his attractive qualities. Honestly, it reminds me of Parasite, as a comparison, because it was such a good, bloody, violent movie.