The idea of the story is very poetic. A woman who has attempted suicide thrice and a convict who has killed three people and also has tried to kill himself many times-- such are the kind of people that society generally gives up on. Either we are not able to help them and therefore avert our eyes, or don't understand them so turn away. We see them as incorrigible.
What do these people think of society back for having themselves treated in that way? They must feel as if they are not parts of the society. They must feel like the world is not for them. And yet they have to follow its norms. That must be very suffocating. That is possibly why they try to take away their own lives-- to get away from it. Can a person from within the society reach out to a person like that? Probably not as the insider can only imagine how they see. Another person from outside might.
The manga addresses the issue of difficult childhood and how it molds our lives throughout. It is not easy to steer away from the results of trauma from past. But should we we even ? Don't those sad experiences turn us into our present selves? Rather than forgetting them, shouldn't we try to build on them, learn and benefit? That would be a more satisfying result.
The story is comment on people who blinded by their own troubles forget how others feel. There is a comment on how the religious people are humans only, and have their own flaws. The story doesn't follow the the stereotype of people being reformed by religion. In the real world many people don't want to deal at all with religion. The story is about such people too.
I like this manga because it lays bare the sorrow of people who have lost everything and don't care about anything at all now. It gives the reader the hope to be happy also.
