I don't even know where to begin... This drama was stunning from start to finish, It's the kind of drama where you don't ever want it to end.

Seo Kang Joon's acting was absolutely phenomenal. He played both parts so well that it actually felt like two different people. His entire body language changed between both characters. I was also very impressed with Park Hwan Hee who I've never seen before. I hope she gets a leading role soon because she really deserves it.

Although the storyline is nothing new, this drama really made it fresh. There were also quite a few twists that I did not see coming.

The music was good, but could have been better in my opinion. There was nothing really memorable about any of the songs, but I guess that's also a good thing because they didn't stand out too much and take away from the story.

Rewatch value 10/10 for sure. I would watch it again right now... If my plan to watch list wasn't so long.