I love how the dynamics between ML and FL suddenly changed after ML revealed their childhood connection to FL. They are already like a married couple, so comfortable with each other. I was blushing hard when ML and FL were conducting their research together at ML's house.
I find it funny that some other actor played Ban Ju Yeon's teenage self. In other dramas, even actors in their mid-thirties perform high school student roles.
Final rating 8.5/10. I didn't enjoy it all the time. But the storyline is great.
Cheon is alive. I kind of even predicted that he would be alive. Villain or not, his character is certainly admirable. By the way, does the ending indicate there will be a season 2?