To cut to the chase: This one-shot story is just one huge pile of horse manure, with a confusing and convoluted story featuring characters you don't care about.
The 'novelty' of this OVA is that it involves summoning a demon through the use of the high school's computer, complete with cheesy bleeps and bloops and reel-to-reel tapes and all that. The way that computers are shown here may seem way quaint and silly, but keep in mind when this was made -- in an era when only a tiny fraction of the public had access to any sort of computer at all. Anything involving computers was, for many people, a Big Unknown. And when you have a Big Unknown, it can be kind of scary -- or, at least turned into something big and scary for the purposes of a movie. Hence, devil worship via the computer.
But don't worry, before this story is even a third of the way finished, almost all of the digital computer stuff is stripped away from the story, and it turns into just a regular human vs. demon story instead.
And stripping away the novelty, and you're left with, well, nothing worth watching. The main character is a complete douchebag for the first part of the story, then makes a sudden switch and we are supposed to be rooting for him, but by then it's already too late and the characterization of a douchebag is already set in stone. The girl in the story is a confusing element, starting out as the scared new girl in class, then for a brief moment has shining laser eyes that kill everything, then she's basically useless for most of the rest of the show. As Mr. Douchebag is left to fight the Giant Pink Slime Monster over and over.
Before long, I was tuning out from the story, as too many loose ends were left flapping around, too many unexplained events, and no clear path to follow along.
Artwork and animation were perfectly fine, I guess, if you like how well they draw and animate pulsating pink stuff. The background music was laughably bad, even by the standards of the time.
