Story - It has a complex story that explains most/all of the important details of why something is possible which helps people that are confused coming from other fantasy genres. (Of course, as far as fantasy goes the manga decides the limits.) 10/10
Art - The art is beautiful yet simple. I am not an artist but I am confident to talk about the art in this story as something good on its own end.
The art shows only what the author wants, therefore, having an effect that matches the story perfectly! It is neither too flashy nor too dry which is an outstanding achievement. 9/10
Character - Every character has its own personality and therefore different development. Everyone acts with respect to their personalities and won't easily change their way of thinking for no reason. 9/10
Enjoyment - The unavoidable 18+ side of the show is the main part of the enjoyment brought to the eyes but. If you follow the story you may find purpose in the completion of the MC's quest. 10/10
Overall - Everything stacks together perfectly like lego blocks. 10/10
The main story is not left behind, the art doesn't vary in quality, the characters don't randomly forget stuff and/or ignore the story for secondary unwanted quests which are useless for the continuation of the show.
This is one of the rare finds which also gets an anime adaptation. I would most definitely recommend it to anyone who already read the manga.
I however don't recommend watching the anime before the manga because some useful information that is only explained in the manga is key for the overall experience.
