I like the art and the story so far, but it's gonna be hard to appreciate this one if the author doesn't come up with a proper background for the FL.
Don't get me wrong, I'm not the kind to think "she's a murderer and should die" like I've seen in some comments. It was war, and so far it looks like she just followed the orders of her King. Being a conqueror and seizing a territory through war used to be seen as glorious acts worthy of praise in the past. In her country she's probably seen as a hero. Even though it is badly seen in a peaceful Era such as ours, hating on a character from a medieval setting for being a warrior is silly imo.
The thing is that she probably killed the MC's parents from what we've understood so far, which in itself is a good setting. My only problem is that I don't see the "drama" or the "tragedy" tag, so I'm worried about how the romance is going to unfold. If the author gives us a "she killed my parents, destroyed my nation and bear a profound hatred towards my ethnicity but I still fell in love with her" without a proper background story and a massive drama/tragedy I'm gonna be disappointed.