Well, I won't be able to read any more until August, but here are my thoughts on Volume 1:

It's a Seinen, perhaps jarringly so if you aren't familiar with the author's other work. Pleased to see that it doesn't seem interested in discussing pornography too much, good because that's a complicated topic and a sci-fi manga is not the place. It doesn't idealize high schoolers at all either which is a nice change; and the characters so far seem interesting and a bit more nuanced than you might expect; for example, the boyfriend Ryuji isn't just a worthless violent layabout; he's an insecure worthless violent layabout, which fits with his circumstances. That extra distinction is subtle but makes him more real. Same with Chiho and Rei.

I think the pseudo realistic art style works quite well for the setting and pace of the story. I find it a little strange that background characters have realistic face structures, when they are interacting with the main characters, who are more anime-like. It's really just the eyes. Chiho's body and posture disturbs me often, from a physics and anatomy point of view, but putting all that aside, the visual storytelling is good. You get a good picture of Rei's interests and personality from just his backpack and his room; few anime and manga take this approach to set design.

Volume 1 is just the set-up. It takes 4 chapters for the premise to start to kick in. Who knows where it will lead? I have no idea. So far, so good.