The whole "everyone over 19 poofs into dust" thing happens like five minutes in, and honestly I was just there for the big tits tag. Priorities. The school setting is standard until it's not, suddenly you're in this dystopian free for all where the remaining teens get superpowers or whatever. My guy got the power of conveniently timed groping animations, I guess. The 3DCG is deliberately unpolished, like someone left the character models in the oven too long and they came out looking like shiny plastic mannequins with anime eyes. It's not "good" but it loops perfectly when you're skipping dialogue.
The romance path with the busty classmate is a fever dream of awkward pauses and physics defying chest movement. There's a scene where you're supposed to be having a serious talk about survival rules, and the camera just slowly pans down to her chest while she's explaining the new world order. I laughed so hard I almost closed the tab. The teasing mechanic is basically a staring contest with her nipples through the uniform. Then the graphic violence tag kicks in out of nowhere, some dude gets obliterated mid flirt, and the tonal whiplash is so severe I felt it in my teeth.
The male protagonist has the emotional range of a wet sock, which somehow makes the explicit moments funnier. During one animated sequence, his hand phases through her skirt like a Bethesda glitch, and she moans anyway. I wish the superpowers were used for something other than just ripping clothes off, but the game clearly knows what it is. A messy, horny, occasionally violent slideshow that treats its own plot like an inconvenience between groping scenes. The dystopian setting is just window dressing for titty jiggle physics that don't obey any known laws of motion.