The very first minutes of the first episode look very promising and the plot is also really good. But around the 10th episode or so, the story gets dragged a lot and it was a bit hard for me to finish it. Too much emphasis on the key to Cheon Ui Joo instead on character developments, I really wanted more of that and also some progress on the fighting scenes or on Si Woo's powers. The ending was nice but quite rushed. It makes sense if the drama was shortened from 20 to 16 episodes.

The acting was really good! The actors did what they could with the script. Some scenes were badly executed: one that really pops in my mind is the cliff scene from the last episode. I mean, it was in 2016, not 1976!

The OST was perfect! I was so happy to hear VIXX again. Lee Hyun Woo's song was really good: didn't know he sang so well.

I wouldn't rewatch it to be quite honest except some fighting scenes, I was disappointed when the tournament was cancelled, that was one of the most exciting parts!