Considering how short the manga is and the fact that you could read it in less than an hour you should definitely give it a go if you're into surrealism, guro and future punk, but aside from the aesthetic this manga doesn have a lot more going on, there's a overarching plot but it's not really that interesting, the action scenes are fairly confusing and the ending, well let's say once you get there you may be disappointed, but again, only 6 chapters and it's a Shintaro work so you should check it out if you're interested on the stuff i mentioned before.

If you're familiar with Shintaro Kago's more anarchic, surreal works, this may be a bit of a surprise. Though short, it's more of a straightforward science fiction story, with a plot, characters and all. It does still have his penchant for the strange, obscene, and gory, of course. The story itself is decent, if a little predictably Twilight Zone-esque (if Rod Serling were completely out of his gourd), and though it's simplistic, it held my interest for the short duration.

i can see the 'twist' miles away, but after several chapters then i realize why characters look like that. i thought it is just artistic choice to have the people looking 'cartoony' and 'roundish' but when you can see the bigger picture then it just click to you why they look different than the mangaka's usual style.

That's one strange manga...
I didn't expect the art to be good, but it was. Detailed backgrounds.
There wasn't much of a plot there... Mainly just showing humans should either grasp full, mechanic control or get rid of those 'solders'.
Someone was trying to make a point? "don't play god" "don't mess with things you don't understand"...
All been done before, and done better~

So in my opinion you won't miss much by not reading this manga.~
Oh, and it's not "mature". It's just "adult"...