Art: it's very good and well drawn. The author states they are quite new to drawing manga, but we have to apreciate the amount of detail and action there is. It's really good.
Story: it's the flaw of this manga. It starts well-paced, but then it gets super fast and in the blink of an eye it already ended. There are no story arcs or anything, besides it's very short. The ending seems like a cliff hanger for a season 2, but we'll never know. Many loose ends, many rushed backstories, it's very poor.
Conclusion: if this manga was any longer, I wouldn't recommend, but its not. Its fun while it lasts, it has some crazy action and gore. I enjoyed it, as someone who doesn't care about reviews online criticizing every detail. Give it a go.
