I've just watch 7 episodes but I think it's Must necessary to do a review of this.
from the first Episode I've seen i got instant Attack on Titans vibes from it after watching it considering how brutal that Anime is and how it doesn't even have a safe zone which means anything can happens so if you're a fan of that Anime then this Anime is a must watch for you .
the story here is really interesting and kept me on my toes for all those 6 Episodes that I've seen so far unpredictable and bloody events with the mystery surrounding it making this plot probably one of my favorites .
Action scenes and the Animation and artwork all really great and everything looks gorgeous to look at .
also one side note : i really love the connection and the relationship between those two siblings the main protagonist and his sister really eager to find out how things will end up for these 2 .
overall i really rarely gives a high rating but this one really deserve a solid 8 / 10 might consider giving it a higher points in the future with more Episodes out .