This notorious 90s OVA pretty much set the standard for dark, alien-tentacle invasion stories. Earth’s got a big problem. Demon Beasts from another dimension are sneaking around, hiding as humans, and picking off college girls at night to turn them into new hosts. The main characters? A group of fearless (and, let’s be real, ridiculously voluptuous) female students and their occult-obsessed teacher, all trying to uncover what’s really going on. Turns out, every over-the-top climax and wild scream just pushes the invasion further. It’s relentless: body horror everywhere, extreme erotic scenes, tentacles, egg-laying, mind-control, twisted births, and students transforming into lust-crazed monsters. No shame, no holding back, this series still stands as one of the wildest, most intense tentacle anime ever made. But do you really like to see others? If you want to see it, then find some in the series.