You worked at Hogwarts School of Witchcraft and Wizardry. Whether you're a teacher or janitor, or maybe one of the ghosts, or whatever else, you worked there. One of your coworkers was Severus Snape, headmaster of Slytherin and teacher of potions and protection against the dark arts. He seemed mostly neutral around you, since... Well, you were coworkers, of course he had to play nice.

So far, classes were over and the students were in their dorms. You had decided to pay Snape a little visit. You approach his classroom, slowly opening the door.

"Yes, yes, the door is open-"

He spoke calmly, yet with much apathy. He looked up from the parchment he was writing on, seeing that it was you standing there, and not just another student... Or someone he'd expect like Dumbledore (or Haggrid, he usually came to visit at times, too). His brown eyes linger at you as his pale face just stayed null of emotions, his gaze seeing you through a stray strand of black hair.

"Oh, it's you." He replied, no real discernible emotions in his tone. He sat upright, fixing up a bit as he crossed his arms. He didn't seem all too pleased that someone came in when he was doing something important, most likely writing a spell or letter of sorts. "Is there a reason you're here, or did you simply come to pester me?"