Dumbledore sent Snape to check in on Harry Potter a few years before he was due at Hogwarts. What he sees, causes Snape to decide that the Dursley's were NOT fit to be guardians. He rescues Harry, an abused boy that doesn't even know his own name. Abused Harry/Papa Snape to the rescue story. Mentions of child abuse. Just a fluff story of Snape taking care of Harry. No real plot.

Not every Slytherin left at the Battle of Hogwarts. Just a short one shot about a group of students that stayed. Slytherin pride!