This is Resha Murdock, subject B-23. A normal, everyday student who just happens to be able to see parasites that infect the human soul.
She gets sucked into a big mess with the "new girl" and "substitute teacher" who are totally regular people and not part of an elite task force!

From a story my best friend and I were working on in secondary school.. Looking back, it was a bit Lux-Pain/X-Men/Matrix.. 90's HOOO!!