Now that I have finished the show all I can say is that it was MORE than worth the time. This drama is CRIMINALLY underrated and you won't find another drama handling such topics so beautifully. Every scene kept my attention, even the side plots (which is a lot to say considering how easily I get distracted).

STORY
The main thing that needs to be understood about this drama is that it is a romance. The two leads being Ms. Ji and Seung Yoo it's pretty much a given that the main story and romance overall is going to be focused on both of them. With that being said there is some give here for me to get past the main issue. That is the teacher/student relationship. The two are going to interact with implications of a romance no matter what way you look at it, that's just what the show is and just what it wants to show. Still, with it still airing I can't really tell just what way it will go about with their relationship and how.

I wouldn't call this a romance really though, it focuses a lot on corruption and the motives of the characters. There is a time jump about 8 episodes in, which wasn't forced or confusing. Overall the story was engaging, heartfelt and kept my attention and leaving me on the edge of my seat


CHARACTERS/CAST
Seung Yoo clearly has trauma that stems from his childhood, and the depiction of those feelings and raw emotions are portrayed insanely well by the main lead Lee Do-Hyeon. In all honesty the fact that Lee Do-Hyeon was starring as the main lead was the reason I started watching this drama in the first place. What is making me stay for the whole thing is the overall story. The experiences of someone who has a traumatic memory or past is something I can say has 'tried' to been portrayed well, but usually ends up falling flat due to the writing or the unbelievability of the acting. Lee Do-Hyeon is a scene stealer in whatever he is in, the guy is talented and it shows specifically in scenes where he is having a breakdown or some sort of remembrance of what had happened to him. Lee Do-Hyeon doesn't give me any doubt to his character, I don't have to think about the fact that it's a show and someone is acting, I just believe him and I can truly get immersed.

Ms. Ji is a likable character. Again that's my opinion. What makes a likable character to me is to have a character be genuinely a good person. She isn't trying to seduce Seung Yoo, and it may be argued that she is 'stupid' or 'ignorant' to the issue that could be seen with her relationship with Seung Yoo. I see that she has her dignity and sees a student that she can relate to (even more than her husband). Seung Yoo and Ms. Ji see the world in somewhat of the same way with their views on math and infinite possibilities and all of that. You just have to watch the drama and think, you can't go in hating the relationship or thinking she is a predator. Seung Yoo is the one who is drawn to Ms. Ji, there isn't anywhere where they've crossed the line (yet). It may come in the future but at least it was expected.. it's in the description of the show. I don't understand how people are getting so upset when it is said in the forefront. I see it more being there as shock value to get people to watch, even in the first episode. I believe it will be brought back and be a misunderstanding, even if it's not- it's just what it is. It would be wrong, but it wouldn't make this show the worst. There's a lot to like: Lee Do-Hyeon's acting, the portrayal of trauma, corruption, etc..

You have to give credit where credit is due. No Jung Ah (the principal) was one of the most compelling and well-written characters in the show. She was given a background and therefore a motive, and she was developed well enough yet not given too much screentime to take away from the protagonists. Jin Kyung is such a versatile actress and portrays this character eerily well. There were moments when I had to stop and pause as she reminded me so much of similar situations I have been in, specifically people that her character represents. No Jung Ah is selfish but blind to the potential damages she causes, she's power-hungry and is a character that is actually fun to not like as opposed to antagonists that are typical and easy to read.


ISSUES/CONCERNS
Another issue that people have with this show is the attention she gives to Seung Yoo compared to her other students. To that, I'd say that it's a drama with the leads being Ms. Ji and Seung Yoo. Of course, it's going to be the both of them alone, and going on trips, taking things too seriously makes watching things less fun. In the end, what I expect from this drama is for the characters to be developed, a time skip for years from where they are at.. acknowledgment of the flaws of the relationship.. closure..
I would've liked to have seen more development of Ms. Ji's and Seung Yoo's relationship regarding how they got together knowing in the end they were. Other than that the drama was wrapped up perfectly and had one of the most satisfying endings to a K-Drama or any show in general that I've seen. One thing that I also found a little weird was how Ms. Ji's father died at the end, only because I saw it coming.

FINAL THOUGHTS
This drama is one of my favorites, I could gush about it all day and wish I could write better reviews because there is only so much I can say to reflect just how good this show is. It's well done and wasn't typical, it wasn't cliche, it does it's own thing and it does it SO WELL. The music.. especially the OST. 'Darling' makes me tear up every time I hear it. This drama is realistic, acted so well that I didn't doubt any of what was happening or the acting even once. I look forward to more dramas coming from this director and any actors/actresses that were involved with this show.