Draco clenched his teeth, forcing sharp, shallow breaths through his nose as he ripped open the door to his usual lecture hall only to find—someone at his desk. Well, he supposed it was technically less his desk and more the desk as he didn’t actually own this particular classroom. But since he’d taught in it for the last four semesters he at least felt like he’d earned a sort of common law ownership. The woman—presently possessed by what looked like a semi-sentient mass of curls atop her head—looked up, eyes widening before she graced the space between them with a kind smile that could cut through any density of grit or dust or grime. The sort of simple smile that could pulverize rocks: be them buried in the earth or caged behind ribs. He stared at her, belatedly and painfully aware that his mouth had curled into a sneer mostly without his consent.