Honestly this is my 1 favorite drama! I have never had a 1 favorite drama but this one is a knock out. The story starts slow but it becomes a mind blower. At first I had no feelings about the characters or the actors because I didn't know any of them and the story was still mysterious. I honestly watched it to fill the void after Bubblegum and Oh my Venus, by this drama has such a deep psychological and human side to it that sucks you in endless debates about what is right and wrong, who is to blame, is revenge acceptable and if it is to what degree is it acceptable and the Jung vs Inho debate; who is best for Seol (even though for me Team Jung forever). It adresses many issues in a way that doesn't manipulate your opinion but gives you the facts and lets you decide what side you're on. I was glad it gave a focus to the introverts vs extroverts issues and how society always sides with the extroverts even when they're at fault and labels introverts as weirdos (psychopaths) that needs to be dealt with. The characters are very realistic, their reactions are genuine even though some argued that some of them are exaggerated but for me there are actual people who behave and screw people like that. And don't get me started with the acting everybody is perfect specially Lee Sung Kyung. She played Inha brilliantly. This drama deserves a reward. I only wish there was more screen time for Park Hae Jin and I also would've loved more time for the couple to actually grow deeper. This drama is the first drama that gave me a post drama depression. I am going to miss it. I would definitely watch this again b I wouldn't recommend it for people who are looking for a cozy lovy-dovy drama.