Story:8
I found the concept of this story to be very interesting, and it had me hooked from the very beginning. I liked how they talked about by what means they must use to survive, and how they explained everything very logically. I didn't like how I couldn't figure out the ending though, but that's not the story's fault. If anything it makes the story great!

Art:7
I liked the art for the most part, though most of the characters look like they're from Boku Dake ga Inai Machi for some reason. Even so I really liked how everything was drawn. But I felt some of the drawing's were unnecarrasy, particularly fan shots luckily there wasn't a lot.

Characters:7
I found most of the character's very interesting such as their backstory. I don't like how most of the character's problems are resolved rather conviently. I would go into more details, but I don't really wanna spoil anything.

Enjoyment:7
I enjoyed this manga a lot, and marathoned it pretty fast. Even though it's only twenty-five chapters I have some trouble reading short manga, usually because I feel that it's short because it got cut so I send them to the back of my list. One thing I didn't like were some of the scenes didn't really make sense, and I felt I skipped a chapter. However the reason they did that was very good, so I justify it.

Overall:7
I think this was really good overall. I would probably tell most of my friends about it even if they didn't like horror, or had weak stomaches. Perhaps I may even reread this manga after I wait a couple weeks I don't know. It isn't something I usually do unless I really like the series, or a anime adaption is coming out. Anyway, I really liked it and all.