Very disappointing.the plot could've been much better.ryu sio didn't deserve that ending at all.honestly it could've been way better if he could've gotten a chance to become a better person.although he is the so called villain In the story he is just a person who was betrayed by everyone he ever trusted. I personally think that the fl is the biggest red flag in the whole drama cuz she won his trust ,became his friend,used him and then betrayed him and did not even feel guilty.and ryu sio's friend,the other red flag,he seriously thought that he was a good person when he said that he has to kill ryu sio to live his life.like wth .Ii just really hate the ending it's horrible no words to describe it other than ryu sio deserved better,better than the backstabbing fl,and all the other ppl around him.however ryu sio's acting was the absolute best and his parts are wat truly made me watch this.