Now, as much explicit gore as there is in here, this is actually one of the more plot-heavy works of Masumi Nishin (although the plot is straightforward and simple). Do not read this if you're looking to come out of it feeling good, or get attached to anyone, or see sexy and loving scenes. It's a story of two deeply flawed, fucked-up men who cling to and use each other until their inevitable destruction—if you approach it as anything but that, you'll have a bad time.
Docking two points because the detective subplot needed a bit more fleshing out, and because it's never addressed how easy it is for Andy to do what he does without getting caught or rousing suspicion. However, I did appreciate the attention paid to details like epilepsy, drug and alcohol abuse, how one event can derail one's life, and how sociopaths can go under the radar. Needless to say, I found the art gorgeous; Nishin doesn't shy away from showing the nasty bits, and all her characters are distinct. Points for Andy, because that blank stare gave me more chills than the gory scenes.
Personally, the only part of the story that got to me, as a seasoned horror fan, was the animal abuse; fortunately, that part was fairly short, but it was explicit, so be wary of that. As before: read the tags, read the warnings, and don't expect that much subtlety.