This drama is one of my favorites! The story has many plot twists and many revelations at the end that surprised me very much. It also explain how society would work if we were in 2035 with synths. The story questions us on the meaning of being a human. The acting is very good, we could actually believe that they are robots, not only the movements, but also the way they speak. As for the "humans" the acting is also very good, they portray their emotions perfectly, etc. I personally really love the music, because they represent what's going on with the story. The opening and ending song are also very representative of the main characters and story if you understand the lyrics. I could definitely rewatch this drama and enjoy as if I watch it for the first time. I do not really understand why there are not many people who are watching this, maybe because it's the lack of subtitles, or because people find the Swedish or British version better, so they won't watch this one. The ending is like a happy/open ending, like there a new characters who are introduced, but we don't know who they are. I think that maybe they will produce a second season, but I am not sure. Overall, I really recommend this drama, because the story is very well written.