I honestly liked this manhwa cause it served nothing more or less of what it promised...It's not your typical romance or even anything close to that! In the times of war, love becomes a luxury...So if you are prepared to witness the cruelty of war, the military and the roller coaster way to survival of our FL you are welcome to join!
The FL in my eyes is not a weakling as some others have mentioned but just how your average young girl would react when faced with such cruelty...She was just naive enough to not realize what she was getting herself into...And her "love" for ML is also reasonable psychologically...When pushed to extremes, one will clinch to any warmth and hope they can get to stay sane...And finally the big finale twist that explained the blank parts about the ML...To think that the double agent was not Sasha but HIM and that's the reason he spared her (or even this was already planned and instructed from their bosses) and eventually developed feelings he never thought could ever bloom in his heart was a nice touch to this! In the end those feelings they both felt were unplanned but geniune!