This drama was a hot mess for a lot of reasons, but the most glaring being the FL's "character". She was a hardened last-man-standing against an entire army GENERAL who is going back in time to STOP a devastating WAR. And from episode 2 on... she's only a frail little girl who speaks softly, worries about trivial crap, and never does anything outstanding as a LEAD. Nothing outstanding as a GENERAL. Nothing even remotely resembling someone on a MISSION to save the future. She isn't badass. She doesn't fight much. She doesn't scheme at all. She doesn't even come up with ANY real plans of her own. Disappointment is an understatement. & let's not even start on the messy storyline and absolutely incomprehensible time travel element... because this drama just uses it as a ploy and doesn't follow any type of rules of engagement. We have WAY more questions "What happens if..." now that when we even started. The only good thing in this drama was the FL's beauty & the ML's flawless acting. Seriously HATE him in Princess Agents... like wanted him to die a slow and painful death hate, but there is no doubt he's an epic antihero! He's a FABULOUS actor!

BUT... even as an antihero, he had MAJOR flaws. Ones in the script, not in his acting.
((( light spoilers below )))

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The ML is supposed to be an antihero, I'm guessing. A TRUE ML antihero who isn't afraid to do a LOT of bad things to make "right" or get revenge on some bad guys. HOWEVER... that means (in this drama at least) that he is willing to USE, HURT, & MANIPULATE the FL to further his agenda. I *get* that he knows she can't DIE, however... him whipping her and hurting her physically (she feels PAIN, DUDE!) just to shrug it off, like "well you'll heal anyway & that's the only way I could think to get you out" EW.
Not only that, but he is CONSTANTLY manipulating her, using her, putting her in danger JUST for his own benefit. These traits are NOT attractive EVEN in an ANTI-HERO ML.
The ONLY way the episodes that have aired so far would work with the ML KILLING her, hurting her, using her, etc... is IF they wrote it to where he is willing to do all this because he doesn't REALIZE YET that he loves her. THEN (maybe) we could understand/connect with the ML later when he figures out his feelings and then REGRETS his past actions. This drama has left NO room for that and completely cut out the opportunity for character growth in that regard.

I WILL say that he gets better (later) in the drama, but it's like a switch flipped and weird. Not a natural transition of falling in love and regretting past actions and moving forward to love & protect. Instead, it's like... use/abuse/all for the greater good then POOF like it never happened, I'm the perfect slightly damaged ML who is just misunderstood. Such an unnatural shift that you NOTICE the shift as it happens.

Sad about this drama. Such epic potential.