Mission of Darkness

When a meteorite crashes into Japan, it kicks off a wave of weirdness that escalates fast. The alien payload inside isn't just rock — it's a creature that hunts women across the country, leaving behind a trail of bodies and evidence that has the government completely baffled. Their response? Send in female operatives to lure the thing out. That plan goes about as well as you'd expect, making the situation considerably worse before anyone figures out a better idea. Then a massive alien woman called Venus shows up, and suddenly the crisis takes a very different turn. Injuu Daikessen is a single-episode OVA from 1997 that leans hard into the horror-sci-fi setup that defined a whole wave of adult anime from that era. It's got that same DNA as Demon Beast Invasion or the early Urotsukidōji entries — alien threat, desperate human response, escalating chaos — but it plays the absurdity fairly openly, mixing genuine tension with moments that are clearly not meant to be taken seriously. If you watched La Blue Girl and enjoyed how those stories mix creature-feature horror with complete narrative lunacy, this sits comfortably in that same space. It's rough around the edges the way most late-90s OVAs are, and it doesn't overstay its welcome at a single episode. Worth a look if that era of dark, strange adult animation is something you're already into.