Im quite frustrated with the drama actually. im halfway through the drama but main male lead doesnt have many important role in the story and rarely or didnt participate in any major plotline compare to his fellow main lead, except he only there as a love interest to female lead and involve in romance or fun part of the story, which by then is not that many scenes. This is a military drama and need seriousness, the character can have this immature vibes, however it depends on the story to inject depth to this type of character slowly. Look, Ive seen Xu kai in the legends, and here he potrays an opposite character, so i know he is a talented actor that can express his character excellently. But the drama didnt justify him enough to develop the depth of his character or involve him in the story. The drama didnt utilize this talented actor yet promoted him/this character as the main lead / couple alongside main female lead. For example, there are many times/scenes that 2nd male lead saved female lead or have that serious moment while main male lead didnt know that his love interest is in trouble. 2nd male lead have dominant upper role halfway through the drama that sometimes i think 2nd male lead should be the main couple because his involvement with female lead looks more realistic in life, compare to the main male lead whom have random involvement with her at times and always playful and immature without having serious outlook on his character (scene which can spark enough interest to female lead because female lead has more complicated side that needs reliable male lead- its not very realistic in a military drama to have male lead that always joke around and didnt get serious enough). Thats why i think viewer can't feel stronger chemistry between main couple compares with 2nd male lead and main female lead whom developed enough chemistry to spark viewer interest for this couple.

For me, main male lead character can be playful, quirky, immature but usually this type of character (even in rom-com) have serious side about him that others dont know. They can develop this side slowly and put some serious scene and inject maturity into the character so that he can be put in major plotline. Halfway through the drama and yet this male lead was left behind in any major plotline (like he doesnt know that female lead is investigating something or troubled with something while the other 3 main lead and villain including support role already in the mainstream plot, like wth happen with the story that he was left behind at the important part that all the characters / his peers have start getting involved yet he still not knowing anything - and sometimes i feel like he doesnt care for it). His character is like this support role that people only comes for fun part and takes for a joke but doesnt want to get him involve in most part of their life. Sometimes i feel this character doesnt even qualify to be made 2nd male lead in this drama. Wth that during the mission main male lead can still play around and the important point is he doesnt contribute anything to the storyline's progress. You see main lead can still be playful and immature but reliable, but he is playful but unreliable at the same time. He always jokes around and doesnt take things seriously. I think if they put any character or the main male lead died, it didnt affect the story at all. To be fair, the main male lead actually felt more compatible with 2nd female lead in terms of chemistry because he have more serious scene and depth with her, though im hoping his character get more serious from time to time. Of course there are few scene that fluttered your heart and give second look at main male lead, but somehow its not enough to develop this character to be taken seriously and to be relied upon. This is not the fault of actor or the acting/performance, rather that this character didnt have enough serious scene and intimate moment to develop the character for the audience/viewer.

I mean look, its halfway through the story, this supposed to be near or at the climax part of the drama. At this point, the drama should have shown us the viewer what to look forward on every character for the rest of the plot. If you (the production) want to have strong love rival in the drama, at least give both love interest (or any character at all) same chance to develop their chemistry. But for me this is not love triangle or anything, they do the opposite - they strengtened the 2nd male lead character and story towards female lead, but abandoned the main male lead character development at all. Not even that, the main male lead (for me) doesnt have enough strong point to be called the main lead. Because the drama doesnt show that he is reliable or can be relied upon when he needs to.