This second season shows you the actual story of Joon and Kwon. And gives you the reason behind why Joon is good and Kwon is bad. And also it makes you confused who is Joon and who is Kwon again. They think Kwon is captured and so they are happy, but when the twist comes it shows how the twins got into all trouble. Even tough one is bad, still he loves his brother. And one of the twin sacrifice his life for the other. Music is good and song is my favorite my everything by Lee min ho.