Not the highest, but not the worst.
It's a really good enough. Why? Because of it has a good development of the main story by hand of the various cases to investigate for.
STORY: If you are looking for pink romance, this is not the manga that you are looking for, now that the manga it's already end and it rest just 8 chapters to me to end it I can say that this manga has some romance but not how you expect if you are an a romantic person due to this history has centry in the resolution of cases relationed with supernatural events and of course spirits and murderer's.
CHARACTERS: I read some people disgusted about cliches and the wekness of any or another characters and can't discuss this point nevertheless this is because of the mayority of them are too 'human' characters with his own debilities and sins to comfront. So I can say that this was the way that the creator wanted it gave to this story. It didn't make an undestructible main character, anyone of them is strong enough but together they are better and can afront every situation in front. I found this matter good and reallistic.
ART: The art is one of that kind of art that you shouldn't find in so much manga artist. This is that type of beautiful and dedicated art that you might yourself asking how much time the artist waste in draw it. About the fonds, behind scene's and nature or department structures were so clean to me.
ENJOYMENT: To me I found the story enjoyable and a developed just on the line, maybe sometimes deducing right and another times just been confused. If you don't like detectives, policeman's and crime storys this isn't your manga.
OVERALL: Good. Comparing with a lot of manga's about how to combine crime, spirits, murderer's, trauma's, madness, touches of comedy and romance without get you confused this was a great job done and to me deserves your read and go ahead if you like it.