Living in America, oppresion is not a new concept. We had slavery for a hundred years, then Jim Crow laws, then a number of backlashes against the LGBT community, and even today police brutality against black and Latino communities. All of these targeted minorities who, for the most part, had no say in whether they were the minority or not. They were born that way. And that is what this manhwa portrays beautifully.
When I first started reading, I was expecting something like a shoujo Noblesse. Where an OP vampire teams up with humans and defeats the bad vampires and humans and saves the day. Maybe a romantic subplot. However, this is completely different from what the manhwa is about.
This is about the struggle to find ones identity even when that identity is "wrong". The main character is not an hero, but someone who builds walls around her to protect her from others who disapprove of who she is. As the story progresses, she starts to break those walls down, and begins to let others into her life. She has to overcome her childhood trauma and believe in humanity again.
However, that's not why this manhwa is amazing. It's incredible because this story is not unique to this manhwa. I have a number of LGBT friends, and all of them went through similar processes of coming out and accepting who they are. They had some of the same doubts and fears as the main character. Moreover, it doesn't stereotype anyone. It deals with oppresion the way that a normal person would.
Lastly, it emphasizes how hard it actually is to accept yourself. Some people that I know do not refrain from bigotry, and this manhwa really put how tough it is to come out with people like that around you into light.
Moving on from that rant,
Art 10/10
Characters 8/10 (a little frustrating at times)
Plot 9/10 (for reasons discussed above)
Depth 23/10
Enjoyment 9.7 /10 (hard to get into but stick with it)
Is recommended. If you need more reasons to read it, it got an 8.3 or something on myanimelist