If you're thinking about watching it, I recommend you do! There's so many interesting things that happen in this drama, it leaves the review curious and wanting more. The ending episodes is what gets you excited, especially when Black/444 finds out his true identity! The characters played the roles very well in my opinion, even though there' some people who disagree! This drama includes supernatural activities which make it very interesting! I don't have much back things to say tbh! Just concentrate on the drama and you won't find it confusing! I promise! :)