The drama kept me interested for a while until the two main leads GBZ and WSY started all of a sudden caring so much about each other and getting all emotional when something happened to the other. I think the plot was interesting, it kept me watching with the mystery aspects but the romance was done terribly. I think the two main leads had like two interactions and all of a sudden they are willing to die for each other and getting all jealous and wanting to control each other's decisions. It just didn't make sense to me. I like the plot and I think it could have been a great drama if they didn't add these poorly done romance aspects. Another annoying thing was how they characterize BLHY to be this super smart guy but a lot of figuring plots out is given to the character GBZ, and they show BLHY's intelligence mostly by BLHY figuring out what GBZ is trying to convey to him in threatening moments. The characterization and plot together just wasn't very coherent to me. I liked some of the support characters back stories like that of GBZ's lady friend, while the addition of other supporting characters were quite confusing. Like, why give such characters so much screen time when they have little influence on the plot? It was just annoying watching them (like that of LR's brother). The point of LR's character and her ear-piercing "Er Lang" was also confusing to me. Why??? What is the point to show us this besides annoying viewers?