I finally watched the end of Big Mouth. Every twist and turn got me and the rush of everything. But the ending just did Park Changho dirty. Maybe it was a consequence of everything whether what he did was good or bad, but I was expecting actual justice but no. They had to kill Ko Miho off and make him stay being Big Mouse. I get it, it wasn't a romance drama, but after everything Changho endured, they could have let him be happy and have justice. Or how Choi Doha was killed just didn't feel like justice. I really wanted the satisfaction of justice like I felt watching Itaewon Class (completely different drama to this but the justice felt sweet, lil pun there.) It was completely rushed and I didn't like the epilogue style of "he got this company or she was rescued from the psychiatric hospital."
But all in all I think this is the best role Lee Jong Suk has done to date. The mafia boss is a good look on him.