Original review (first 2 episodes):
It's been quite a while since a drama had me hooked in the first five minutes. But from the opening scene of My Perfect Stranger I loved the music, the atmosphere, the cinematography, everything, and by the end of episode 2 I was not let down. The pace so far has been fantastic and there hasn't been a single moment I was bored. The acting from our main leads is stellar, be it in emotional scenes or quieter moments. They make these wild circumstances feel plausible simply by the realism of their reactions. As far as the story, this drama had me at time travel. I've often wished for more Korean dramas with this premise because it's a theme I've loved ever since I can remember and I'm really enjoying the execution here.

The overall tone is lighter than I expected and it's great. It sets it apart from quite a few other dramas I've seen involving crime/murder and makes for what is, in my opinion, an easier and more pleasant watch. The humor is clever and genuinely funny without being flat out comedy. Honestly, I would find it a little difficult to name the exact genre of this drama because it truly has its own unique feel, which I personally love. I can't wait to see how the plot develops, as well as the relationship between Yoon Young and Hae Joon. I already sense some chemistry there and I hope that if there is in fact romance in this show that it's not rushed or forced. I would totally dig a low key slow burn between them. The OST is the cherry on top, both with the instrumental soundtrack and the 80s songs interspersed. All in all, if the drama keeps this up, I may have a new favorite on my hands.

Update (completed):
Let me start by saying that most of my feelings from my original review remained true until the end of My Perfect Stranger. The family relationships remained strong and beautiful throughout and my love for the main couple only grew. It's been a while since I was graced with a such a subtle, unproblematic, and yet adorable romance in a drama, and my only complaint is that I wanted more of them. For the most part, the drama managed to maintain the pace and feelings of suspense for me. That being said, after a while I began to realize that no matter who the culprit was, I probably would not feel shocked when their identity was revealed. Why? Because I had already spent hours considering every single person in the entire cast. Any one of them could be the culprit, it seemed, and I started to feel that none of them would surprise me. Sadly, I think that turned out to be true. The reveal simply did not pack the punch I was expecting from such an intense drama, and that was possibly the most disappointing part for me. I couldn't fully appreciate the climax because I was waiting for a second identity reveal that would REALLY shock me and prove the first one just a fakeout. Needless to say, that didn't come.

I've heard some mixed things about this drama and I know some people felt it became too contrived or went downhill. Personally, I don't know how contrived it was, but I enjoyed it beginning to end largely because I could almost always follow the plot. It felt like the writer prized the story more than shock value, and the same cannot be said of many in its genre. It is worth mentioning that I don't usually watch dramas as they air and it's possible I couldn't appreciate some of its flaws simply because I couldn't remember them lol. I do think it took a bit of a plunge into darkness later in the drama and that grew a little tiresome for me, but it did manage to bring back some of the humor and heartwarming elements again.

I have a few other gripes here and there, but in the end, I let them go because I think that overall, the drama did what it set out to do. It told a nostalgic time travel story that was both emotionally intense and heartwarming, and is ultimately about second chances. It wasn't afraid to delve into deep tragedy and heartbreak, which made the victories and happy moments that much sweeter. We got rare focus on family relationships and friendships, beautiful arcs both in the characters and relationships, and an extremely satisfying ending that left me smiling and feeling warm and fuzzy on the inside. I definitely recommend this one, flaws and all.