Read and completed this in a couple of hours basically, it was quite a ride.

I would say this was definitely worth the read if you enjoy horror/seinen but if you abhor bad endings then this will fuck your emotions up because you'll just say "damn I read 89 chapters just for this garbage ending?" Either way, I'm still glad I read it but yeah wish that ending was adjusted.

Story: 10

I enjoy post-apocalyptic stories/settings because it delves into the topic of morality when it comes to humans being in life or death situations and how would they react in certain ways. Overall, the plot didn't really have any flaws except near the end when it reaches the Tokyo arc because it develops into quite a mind-fuck.

Art: 10

The art was very, very good - no complaints, no adjustments etc etc.

Characters: 9ish-10

The two main characters, Teru and Ako, were amazing and you could feel their relationship developing and how much they depending on each other as the story progresses. Other characters weren't really much of a hinderance to me, a lot of them were underaged either way, but I wouldn't say the characters were the biggest letdown of this series because the ending is just what ruined everything for me.

Enjoyment: 10

Like I said before, the story's post-apocalyptic setting accommodated my tastes and interests so I enjoyed this very much despite me wanting to get it over with once the last arc came along since there were some things that were just repeated (the theme of fear) which sort of made me jaded with the story as it concluded.

Overall: 9

This would've been a 10 if only the ending was proper and wasn't ambiguous. In all honesty, I read a review prior to finishing the manga and said that the ending was terrible (which I agree with). Once you get to like the last two arcs is when you start to realize some things are just constantly repeated and the concept of incorporating those self-mutilated people didn't really serve as a purpose for me - I guess it was just to still reiterate the theme of fear but at the same time it was redundant and I just wanted the story to just shut up about it. Anyway, the ending is pretty bittersweet and I wish it would've ended more better as in everything resolving itself but at least only one good thing happened even though that wasn't even progressed either since it literally ended with Teru just saying some words.

Take care and enjoy