This drama is truly a piece of art. And I really mean it. I still can't get over it. For me writing this review is like trying to express my inexpressible love for this drama. I'll try my best:
I already saw this drama on Netflix last year, but I couldn't get myself to watch it, partly because back then I wasn't that much into korean yet, partly because it was hyped so much. Often that can scare you or get annoying, but let me tell you one thing: THIS drama deserves the hype, the high ratings and the love. It's really worth it.

Story: When I read a summary of the plot, I got interested in the story, it just seemed so creative and new for me. I got hooked in the first episode, the plot really was creative. I stayed hooked until the very last scene. So at this point, probs to the writers, you really know how to write a creative, interesting and hooking story.
The story had everything: A heartwarming, cute and mature romance, beautiful friendships and characters, some really nice action parts, but also scenes to laugh at and scenes to cry your soul out. In conclusion: The story had everything you might wish for. The story for me was just perfect. It was well-written and unique. I heard a lot of people say that they had wished for another ending, but for me the ending was the most beautiful and aesthetic ending I've ever seen in my whole drama-watching career:) Also I had NOT expected it to come that way, so it was even better that I couldn't predict it. Also the story hit me right in the feels, I cried a lot of times and it is one of the few dramas that you can actually feel with all your heart!

Characters: I really fell in love with almost every character! Of course there were some I couldn't stand, but that was okay. My favorite characters were of course Yoon Se Ri and Ri Jeong Hyeok! But I also loved the Soldier squad! They were so cool and always made me laugh:) I especially liked the youngest one and the one who loved K-dramas^^ Every character had his very own story and it was interesting to see where they all go. Also the inhabitants in the military village, they were just iconic! I really loved the vibes there.

Acting/cast: The cast couldn't have been better! It was sooo well-chosen, you really believed that the cast was living their roles. The acting was on point, I had no single moment where I thought: Ugh that didn't seem realistic. That happened not a single time! The cast is very talented, I could feel the chemistry between the ML (Hyun Bin) and the FL (Son Ye Jin). It was so strong that I really believed they were in love! THAT is good acting:D Hyun Bin and Son Ye Jin were just born for their roles!^^

Cinematography/scenery: Okay I just had to add this point, mainly because I fell in love with the sceneries! Especially the one in Switzerland, Sigriswil. Oh my god was it beautiful! It was the perfect place to film the story where everything began. I want to thank the producers for making CLOY so aesthetic and authentic and pure how it is. Also every place seemed so real that I truly believed it's how it looks like in North Korea, even though it was filmed in Mongolia.

Music: The music was very special to me. I fell in love with every song, even if it just played as background music. I think the piano piece "The song for my brother" is the most special to me. Of course the music was again very well-chosen and fit perfectly in every scene. I just love the album with the OST. So beautiful, I can't even describe it in words!

So, I hope my review helped someone out in the decision whether to watch or not! ;D For me this drama is a 10/10! It's my favorite drama so far and I guess it will stay in my top-ten list for a really long time. If you're still unsure then please just watch the first episode! This drama will draw you in immediately and you will be hooked! Get yourself a cup of tea and a blanket and start watching!!! You won't regret it :)