If you are looking for a one-shot-esque torture session, this one should be a fairly good one. Since it's a kind of "old" manga, the art style might feel subpar for some people - and the story is short, too, everything is squeezed into these few chapters. So if you want to try to enjoy the manga to its best capacity, I'd recommend reading only a single chapter per day. The problems that the manga focus on are heavy, and the characters are not in good shape, either. At least there is a glint of hope in the middle of the story. I wish thestory was more fleshed out, and gave us, readers, some time to become more attached to the characters.