Onanie Master Kurosawa. I wasn't very interested in it at first, as I wasn't particularly interested in a guy jerking off. Anyway, glad that I did pick it up, it was a good read.
This type of art was pretty refreshing to see, and for me it felt as it really fitted for the story. It gave a more realistic feeling to it, making the characters more realistic. You may also review it on art alone, which obviously wouldn't be too great, however I thought this type of art was very fitting for it.
I liked the fact that the behaviour of the character were pretty realistic: it was supported by the art style, as well as the reactions/actions of the characters.
[b]story[/b]
The story was actually good. I liked the fact that his "path of redemption" began to be slightly visible halfway through the story, with a progressive buildup. Which in turn, I think, gives it a more realistic feeling to the story (comparing to other manga's I have read, where they changed almost immediately, giving it a less realistic feeling. Most people can't change drastically their behaviour without making small steps to achieve it).
I enjoyed this manga, definitely worth reading it.