This is a hidden gem. I found volume 1 of this at the bookstore, and I was skeptical to read it. But, I decided to and it was a good idea. The plot of the series is pretty similar to Death Note, except the main characters are the ones finding the murderers, in this case are called "contractors", which are people who call upon the curse gods for powers. If you want to know the full context of it, then read the synopsis. The story itself can be predicable sometimes, but the result is still satisfying to see. There were still some surprises that caught meoff guard, but maybe that's just me being dumb. There isn't much plot holes, so there isn't any random answers or solutions that are just pulled from the MC's ass. The story is also sorta edgy, but if it's something you can enjoy then it's fine. There also isn't a lot of character development; the main point of the story are the investigations, so the base info that you have on the MC is what you have.

The ending of the story... I don't have much to say. It's more of a "let your imagination do the work" or a game of cat and mouse, there actually isn't an ending to the story. You'll understand what I say if you finish the series. If you want a series with a set and solid ending, then this might not satisfy you. I didn't really have problems with it, but that's just me.

The art is amazing and It's really detailed. The facial expressions were also fun to see.

I'm bad at reviews, so I hope the review did something.

TLDR; If it was too long to read, then overall: The series is a hidden gem, and is fun to read. The art is good and if you're into murder mystery or something like Death Note, you'll likely enjoy this manga. Give it a try.