Schlopsi’s review published on Letterboxd :
What a piece of crap. Even Project Itoh's critically acclaimed novel wasn't perfect, but at least it delivered a semirealistic futuristic world with all its pros and cons of surveillance, nanomechanical warfare, etc. But this adaption is a failure in every aspect - whether or not you look at the trouble it went through during its production.
Genocidal Organ fails to deliver a coherent storyline (and makes all the wrong choices through the way). It fails to replicate the detailed world building, Itoh is so well known for (compare with Harmony i.e.). It just scratches on the surface of the complex thoughts, this topic offers. The animation is a pain in the ass (it doesn't matter if Manglobe went bankrupt during the process, you pretty much can see were they had their hands on - the quality differs from the bullshit of the so called 'animation' studio Geno made), as well as the character design. There are tons of cheaper shows, that look so much better than this useless piece of junk. And it is not just because of the american characters, it didn't look good at all. Thanks to the crappy animation and production. There were plenty of scenes looking clumsy and awkard, were you couldn't tell that this is a movie from 2017.
Let alone the characters themselves without any personality... except for antagonist John Paul. Unfortunately, his shiny moments were too rare. Just like the nanomechanical warfare and surveillance systems, that helped build a world like only Itoh could have thought of. There were enough scenes showing how practical it can be, but little to less behind that facade. Which is a shame, especially regarding the way how it could have turned out, if the adaption followed its source material more truthfully AND considering the possibilities of anime.
I don't want to compare with the original novel that much, but this adaption lacks of a fluent and reasonable story. Most of the plotpoints doesn't seem to be connected at all; they are more like various stations, which the story needed to pass for its clumsy conclusion.
The only positive thing in here is the cruelty of war shown: childsoldiers vs modern warfare. In all its glory. There's no time to trivialize such things and that's the only strength, this movie shows. Unfortunately, these scenes are kept just like the whole essence behind the thematic: Shallow and irrelevant for the story or the plot, because Genocidal Organ doesn't give much about the complex nihilistic philosophy behind its pristine storytelling. What is freedom worth? Do you pay it from personal freedom or other countries, which can't keep up with the modern world of capitalism?