Since there was only 1 non-preliminary view here it goes:
The biggest advantage of this manga is that it tells a short, interesting story relatively quickly.
The art is fine even though it focuses on blood much too much when it doesn't (would much rather the panels focus on character emotion)
The characters are OK, but not fleshed out and sort of cookie cutter, and I know it is short but there are series that can do more with less time.
However it was a nice brisk read and anyone interested in the premise should give it a read cause it isn't much of a commitment