I wish I had watched it sooner, but it's never too late, right?! What can I say about this drama other than perfection. Both the script, the development, the cast, the harsh social criticism and the indescribable emotions that are transmitted are surreal. I sent our muse YoonA (Mi-ho) and dear Lee jong-suk (Chang-ho) as the main couple. For those who like action and raw investigation "Big mouth" is the perfect option, including mystery and suspense. All episodes are very intriguing and engaging, unraveling the mysteries and the true cause in the form of a flashback memory. Some share opposing opinions about the final episodes as it is somewhat sad and moving, but this K-drama's main subject is not romantic melodrama.