I'm honestly stunned more people aren't watching this - I'm only up to episode 6 and have yet to see whether Korea are sticking to their new foray into the BL genre, but whether or not they do, this drama is already a must see! (I'll probably update this when it's all over).
The story and premise is fantastic, with a plot that moves sedately despite the 15 mins per episode. It has a slow build, but every moment feels well thought out and becomes something close to a work of art. Particular highlights come in the form of the 'rush' that occurs every time Yoo Han unmasks and the visit to the art exhibition in episode 5. It's beautifully written, acted and shot, to create a drama that has the makings of being one of the best BL dramas I have ever seen and with none of the usual tropes. This is fresh and beautiful so far, so get watching people!