Remember when the internet was still so much of a novelty that you could create an entire series about a magical girl fighting evil on the internet?
CORRECTOR YUI (Korekuta Yui), based on a character created by Kia Asamiya with story and art by Keiko Okamoto. First published in 1999 and first published in North America in 2002.
PLOT:
In the far-away year of 2020, the world is more connected than ever through computers. One of the few people who isn't is Yui Kasuga, a schoolgirl and wanna-be mangaka who cannot seem to comprehend the first thing about computers. Yet it is she who is chosen by Ir, one of eight sentient guardian programs to be their champion. They were sent out by their creator to stop Grosser, a supercomputer who has gone rogue and seeks to take over the world. It's up to Yui to become a digital magical girl to stop Grosser's minions, find the other guardian programs, and save both the real and virtual world!