I'm not familiar with the manga, so when I saw the high rating, I was expecting an interesting story. plot twists, great characters (I had just finished "Beyond Evil" and I was in the mood for something similar).
That's not it.

The show is more like a collection of short stories (1/2 episodes each) and there's no place for character development, tension building, heart-stopping moments.

The one thing I remember from this show is the actor with the beanie who thought every line had to be shouted.
Probably not a good sign.