To be honest this drama had a good concept but it has so many loop holes that it is very hard to give it high rating. I gave it 8 just because except for the glaring loop holes the overall drama was great. In my opinion anything above 8 is just too much. It had good cast, overall good music, good VFX, good production and good concept. But the they just slapped on the sci-fi title on the drama and just showed some really bad magic tricks and lacked any real explanations scientific or otherwise on how things happened the way they happened. If you can ignore this fact then it is a really good watch.

The drama was overall pretty good. The story was somewhat unique. Even though it still had those same old cliche conspiring villains whose only purpose in life was to just be a villain and create problem for the male lead, it also had some new ways to show brotherhood and a unique romance. Even though the romance seemed a bit forced at some parts it was still a bit different from other dramas and was good overall. The supporting characters were overall good where some go a bit more exposure than the other but most of them didn't have any growth or good background to them and they were just there. The music was ok. The VFX was very good for a drama.

Even with all the negatives I mentioned above I still enjoyed the drama a lot. It was one of those dramas which you don't get to watch too many. I would definitely recommend this drama.