The first episode was brilliant. I'm not too keen on the female lead, she annoyed me in Hwarang. Seung playing as Black looks very promising though. The ending of the first episode was brilliant, the personality switch is SEXY!
OMG. Can I just say how amazing Li Yi Feng (Chen Shen) is in here?! The way he portrays his character is just brilliant. He is a genius. Love his personality in here, especially when he comes up with methods in a split second to get the enemies off his back.
I'm currently on episode 25, just started watching it yesterday. Usually, it takes me a long time to get passed 10 episodes in less than 5 hours, but this drama keeps me on edge! After this drama, I might start watching Li's other dramas. They're meant to be good!
This is the only drama that I've seen more than 5x. Why? 'Cause of Park Seo Joon! His acting is in this leaves me speechless. All of them are brilliant actors, but Park Seo Joon is the most memorable for me. He is flawless at everything he does.
Omg. I really loved the drama, but only because of Kim Jae Wook . Without him the drama would be DOOMED. If there's going to be a second season, I don't think it will be as good. Kim Jae Wook won't be in the 2nd one. :(
K-Drama 
1 
I'm currently on episode 25, just started watching it yesterday. Usually, it takes me a long time to get passed 10 episodes in less than 5 hours, but this drama keeps me on edge! After this drama, I might start watching Li's other dramas. They're meant to be good!