Is not the first manga like this that I see , I think that by these mangas the society is confused and attacks the community but these works can go beyond morality because it is fiction and do not stop these being mere drawings (they are still mere drawings). Like the netorare, gore, shotas or lolis and the fetishes, this work must exist because to say otherwise would be to believe that the drawings can make you a rapist or a sick person, but the reality is not like in a comic or a damn anime.
I really do not think we lose the values
that we can or do not have to see something that makes our own values doubt so easily, the more mature is to admit that we can disagree but if there is no real harm to anyone and the public only seeks morbidity it can that who criticizes have more doubts than certainties.
Anyway, this is a morbid manga and I do not think it reflects any community. The real sick ones are in reality and do not stop to see a fucking manga or discontinued content, I know it sounds pretentious but to those who criticize a drawing . I recommend that you compare a morbid recording against to read a mere comic then you will see that the point is real legal freedom against censorship without philosophies or any reasoning.
PD: it´s just a fucking comic. It does not promote real crimes because no fiction could be written if it did it, it would not be published without being morally censored.