"In 2030 A.D, nuclear war broke out over the environmental pollution issue. Many people lost their lives, along with the majority of life on Earth. The few survivors on this barren planet started a project to save human existence: the Megaro Earth Project, our last hope for survival. And this city was supposed to be the key for this project."
It fails as hentai, being unpleasant and anti-sexy unless you're a scary torture-loving pervert. It is, though, quite interesting as a brutal SF horror with Phil K. Dick overtones.
Flying surveillance cameras can brainwash you by flashing a red light in your eyes. The cops call themselves "snipers" and there's a terrorist organisation called Black Widow. Both sides in this conflict are disgusting. The "snipers" will kidnap anyone they claim to be a member of Black Widow and then torture them for fun. This is supposedly to extract information, but they won't stop even when the victim's saying "I'll tell you everything". Black Widow members officially have no human rights, which the snipers extend to all suspects. As for the torture itself, that's imaginative and revolting. It's not particularly gory, admittedly, but it's still bad enough that you'd worry about anyone who watched all those scenes from start to finish. (I ended up fast-forwarding.) The snipers also gang-rape the torture victims, but only after they've broken under the non-stop abuse and have reached a mental state that actually welcomes it. Afterwards, they're empty shells in a padded cell.
Surveillance is so ever-present in this police state that the snipers have forgotten that voyeurism is abnormal. They make embarrassing or offensive comments as part of normal conversation.
Meanwhile, Black Widow are nearly as bad. They'll shoot anyone in the head... and by "anyone", I mean "most of the cast". They hack into the surveillance cameras to turn people into mindless assassins or suicide bombers. They make women have sex at gunpoint. Furthermore, anyone might secretly be in Black Widow, so your best friend or work colleague might one day kill you.
Our heroine, El(le?), is a sniper and a bodyguard for an idol called Parsley. Which is her main job? Dunno. Idols' images are projected above skyscrapers as they sing and dance unimpressively.
The truth behind all this makes horrible sense. Everything fits together. Theoretically, it's clever and interesting. You might shoot yourself if you lived in that world, or alternatively you could just wait for someone to do the job for you. El herself, though, is decent and likeable (despite being a sniper) and doesn't torture anyone. Parsley surprised me. Everything else is a journey into hell.