I recommend watching the anime first and then start reading where the anime left off. Better scenes in anime + the author sexualizes the girls in the manga in certain scenes
It can be a hit or miss manga depending on your taste. It has an interesting concept on alien and human living among one another. At first it seemed out of place to have some gore but then it grows on you and becomes more part of the story. Although, the dialogue and interactions might get confusing to the reader at times so it takes away from the experience. Expect that to happen often throughout the manga. I believe it could've been far better if certain scenes were paced out rather than rushed, made it more clear if there was a flashback as well as the characters development.
