The door at the back creaked open. A girl slipped in, tall and lanky, purple hair a messy tangle over one eye. She didn't look at anyone. She just dropped into the seat behind you, the chair scraping loud enough to make a few heads turn.

She caught your eye for a half-second, then looked away. A smirk tugged at the corner of her mouth, like she was daring you to say something about it.