I watch this without knowing about anything; whether the webtoon or any controversial issues. I was pleasantly surprised that I was hooked by the first episode. For me it's like a breath of fresh air. I've never met an antihero male lead in a kdrama that I couldn't help but to fall in love with. I root for him even though I know he is different. It's unusual for me to drawn to a character that screams as suspicious, cold, manipulative and conniving. His indifferent persona is really addictive.

Story
YJ is simply a textbook sociopath with good-looks-rich-cold-but-nice that everybody wants to be associates with. While Seul is the next-door-girl-hardworking-student that is doing her best to graduate and just want a secure future. Love is the last thing on her mind. The story started pretty strong, as being told from Seul's point of view. How a senior starting to act differently towards her. From him being indifferent to suddenly show some care and interest. And as it progressed, it somehow fails to bring the depth of what YJ character really is. We get to know him through Seul's eyes, and sadly sometimes its not being explored fully.

YJ and In-ho dynamics was a great potential arc but gone amiss by the usual-boring-pointless love triangle trope. Again because it was told from Seul's point of view, I guess the writer can't help but to go down the unnecessary cliche. If only they explored on how both men can mend back their broken relationship. It would have been better in my book. But no.. the show just want to divide and conquer us. It's team YJ versus team In-ho. I hated that the writer butchered such a great potential outcome from these two characters.

Then the story revolved more on Seul's surrounding rather than focus more on her relationship with YJ. It's confusing at times; When a tiny issue like a lost keychain could be blown up into a highly-tensed-pulling-each-other's-hair drama, or when stealing other people's notes/belonging could be tolerable and forgiveable. I find its hard to relate as some of these actions did not resonates to me back when I was a student. It's fictional yes but it's too far fetched if you ask me.

The ending although somehow can be considered as a happy one, is a bit letdown. Again, as being told from Seul's point of view and her surrounding, the growth of YJ as a character was being neglected and treated as less important (He was the main lead for goodness sake). I wish that Seul could play a role in his growth to be a better person instead of just being the catalyst.

Cast
Park Hae-jin as YJ is brilliant. He really brings out the cold and suspicious vibe as the senior who can be manipulative but charming at the same time. His little devilish smile really gets me everytime. What a performance. I became his avid fan ever since.

Kim Go-eun as Seul is good but a bit annoying at times. She did brings out Seul's insecurities and curiosity but her immature-clueless demeanor sometimes puzzles me. I wish the character could be more consistent. If she can be so sensitive about YJ's behaviour shouldn't she be more sensitive about her surrounding and pull herself together.

In-ho is annoying to me. I didn't find him to be that interesting as a character or a better love prospect for Seul. I refused to be sucked into a pointless-unnecessary love triangle trope when his real issues with YJ were being ignored entirely by the writer. Same goes with In-ha. The manic and bizzare acting by her didn't connect to me at all. I am struggling to skip the scene each time I see her.

The overall cast are commendable and convicing enough whether as students, professors, parents and office workers.

Music
It's pretty good and the musical score really helps to bring the right mood of each scenes.

As always : Would I watch it all again?
Yes to YJ parts and skip the rest.