Just completed watching all 12 eps and IT WAS AMAZING.....where should I start , Lee Dong Wook and Wi Ha Joon both nailed their roles perfectly and their bromance is everything. It had an high speed lively start and even tho the plot was usual one ( apart from the split personality part) the lead actors single handedly carried the whole show. It was a good idea that they made it into a 12 ep drama and the final ep is a MASTERPIECE. For me, it has been a beautifully emotional ride and I'll never ever forget Su Yeol's K (K.I.N.G.) ❤️