as some of other reviews suggested, this manga is very underrated, or should i say, not known as it should be. artwork, character development, story, everything about it is amazing. it simply grabs you once you start reading it. i started reading it less than a week ago and already read all available 122 chapters. this manga is NOT just another story of post-apocalyptic world. often it shows you deep psychological picture of people under desperation. the only regret i have about this manga is that new chapters are coming out so slow and curiosity is just killing me. important point in my opinion to mention is thatthis manga is quite long, but it is by no means stretched. every chapter, every picture of this story is meant to be here, and the flow is amazing. you won't even feel the time passing as you read it.