Draco
Draco looked up, ready to apologize to Severus for walking into him. "I'm.." he started, then trailed off.
It wasn't Severus, it was Potter.
Draco drew himself up and fixed a sneer on his face.
"Watch where you're going," he snapped.
He didn't have the energy for this, but he wasn't about to let Potter know that. Unbidden the image of the Room of Requirement burning, rose to the front of his mind. He narrowed his eyes, and swallowed the bile that rose up.
"Well?" he demanded, "aren't you going to apologize? Or better yet go inflict your presence else where."