Put Up Your Fists and Fight

After another of Tobias Snape's abusive attacks, Eileen leaves in the dead of night with her son. Seventeen-year-old Severus finds himself the only male in a shelter for battered women. Add his daily run-ins with high-school bullies and his crush on a bushy-haired classmate, and he's got enough on his plate. WARNING: Mundane AU in the extreme.