Main reason I actually watched this was becouse for alien concept. I really like science fiction movies, dramas, super powers :) This drama has everything that I love - comedy, romance, super powers, good actors and story. I love both main actors. JJH and KSH both was great. Their chemistry was daebak :) I cryed and laughed together with them. I also liked Shin Sung Rok acting. He was scary and I will miss his ring :D :D :D Also DMJ and YJ Bromance was so good :D The music was nice. Loved all songs. This drama was the best korean drama i have ever watched.