Lol imma be honest, I was really hyped for this drama at first because it honestly just looked good right from the start. But imma have to give it a two star. The plot itself is really interesting and there are good scenes that definitely keep you on your toes, but the casting just ain't right. Cha tae hyun and Krystal are the only one that fits right in. Everyone else, their acting firstly is just so awkward, there are so many scenes that require audience to get immersed but their acting is just way too awkward, unrealistic and even cringe. (e.g pretty much every scene that he dad is in and all the scenes where the main character raises his voice.)
There are also many scenes that seem unnecessary and its scenes like this that break away from the main plot for no reason. Instead of making the story deeper and more realistic it just feels like a drag.
Was expecting this to be a great drama but it just isn't up to standard and I'd rate it somewhere between a C-D tier.