Right, so the whole "everyone over 19 vanishes" thing. It's not just a plot point, it's basically a license for the game to go absolutely feral. One minute you're a guy in a school uniform, the next you're watching a girl with super strength casually bend a steel doorframe while her tits are practically staging a rebellion against her shirt. The 3DCG is deliberately rough around the edges, like someone rendered it on a laptop that was also trying to mine crypto, but somehow that makes the animated teasing scenes hit different. There's this one early groping encounter in a classroom that's so janky it loops almost hypnotically, her chest moving with this weird, physics-defying bounce that I couldn't look away from. It's not polished, it's not trying to be, and that's the whole vibe.
The dystopian school setting is just an excuse for a power fantasy where the male protagonist's main ability seems to be attracting girls with massive racks who are also capable of graphic violence. The romance is there, I guess, if your idea of romance is a superpowered girl threatening to cave your skull in one second and then blushing because you saw her bra strap the next. There's a scene in the gymnasium where a fight breaks out and the camera just... forgets about the action to focus on a character's chest heaving. Priorities. I wish the actual survival for supremacy stuff was a bit more, you know, present, but it mostly feels like background noise for the next teasing animation to trigger.
The whole thing feels like a fever dream I had after scrolling through a certain type of art site at 2 AM. The rules of this new world are explained in this deadpan text dump, and then immediately a girl is pushing you against a locker, and her uniform is straining in a way that defies both fabric science and the supposed grim tone. It's a mess. A horny, violent, unapologetic mess that knows exactly what it is. The groping mechanics are basically quick-time events with a happy ending, and the story takes itself just seriously enough to make the whole thing feel even more unhinged. Don't come looking for deep lore. Come for the specific moment a character's eyes glow red right before her top loses the fight against physics. Again.