For me this is one of the best mangas about zombies, the world building is really cool and intriguing, it makes you want to know more about it... It Doesn't only gives you mistery but starts giving you hints about what's happening to the world.

The characters are cool and well written, I cannot but find them enjoyable overall.

The things I disliked about this manga are the drawing and how rushed it is.

The drawing isn't anything special, it reminds me a lot of Gantz maybe? but there isn't any page I thought: wow what a drawing.

And its too rushed, it feels completely unfinished, with a lot of arcs open, 0 answers, too confused.

Overall, its a really nice manga that you can enjoy very fast, in two-three days you can read it all, and to be honest, I would recommend it every single time someone asked me about a fast read or a manga about zombies.