Let's talk about the romance—or the lack of it. For a drama that is classified as a romance, it didn't feel like one. By the end of the series, I found myself more interested in Dae Young and Myung Jeo’s relationship than in that of Shi Jin and Mo Yeon. They seemed like the main couple, while Shi Jin and Mo Yeon felt secondary.
There were almost no truly romantic scenes, and the few that existed were repetitive and dull. Strangely, for someone like me who is a romantic at heart, I was more invested in the action than the romance, which was disappointing. Every interaction between Shi Jin and Mo Yeon felt uninspired and lackluster. By the end of the drama, it seemed like their relationship hadn't progressed at all; in fact, it felt stagnant. Instead of improving as they got to know each other, their connection seemed to deteriorate. The chemistry they had at the beginning just seemed to vanish.

The acting was a mixed bag. Yoo Shi Jin portrayed his character as a boyish yet badass Special Ops Captain, but at times, he came off as more childish than mature. There was a point where it felt like he was acting like a teenager in high school, which was disappointing given the character's potential established at the beginning of the story. Additionally, he took very little initiative in the romance between his character and Dr. Kang.
Mo Yeon, who played the doctor, delivered her role well, but I wasn't particularly fond of her character arc. Her emotions seemed inconsistent; one moment she was angry, and the next, she warmed up again. She would push Shi Jin away, only to run back to him shortly after. This back-and-forth was quite confusing, and I struggled to connect with her as a character. It felt like she couldn't decide what direction she wanted her character to take, which ultimately frustrated me.

In my opinion, the story was well-written. After finishing the drama, I found myself wanting more, particularly regarding the action. I was curious about the events that occurred during the year Shi Jin and Dae Young were missing. I wanted to learn more about what exactly happened to them, how they managed to escape with the help of Shi Jin's "friend", and the impact it had on their mental states. The ending felt rushed and downplayed. Additionally, the reunion between the two couples seemed bland and lacked emotional depth. I also found it strange that Shi Jin got promoted while Dae Young did not. This was really odd for me.

Overall, this drama was enjoyable, but it really fell short in the romance and chemistry department. The action sequences were impressive, and the combination of action, politics, and military elements is what kept me engaged. I don’t think this can truly be classified as a romance drama. The romantic storyline felt quite flat for me, to the point where I found the romance between the secondary leads more compelling than that of the main characters. While I would still recommend this drama, if you are specifically looking for a romantic drama with great chemistry, you might want to look elsewhere.