Jalil opened his mouth to say something, but there was someone else in the room who would definitely beat him to that particular punch. "Excuse me?" Harry pushed away from the door, his brows lifting behind his glasses. He understood the danger of Remus having bitten someone. He knew what it meant. But the way he'd just said that -- "Monster?" He took another step forward, assuming Sirius would turn to face him as he approached. "Nothing in this room is a monster, Prewett." He lifted his chin some and glanced at Remus as he shifted, and then turned to look at Jalil... who was glad not to have to answer to that. The darker man had stepped back and was lost in his own mind at the moment.
Sirius was a lot bigger than Harry (and a little taller), but the younger man didn't intimidate easily (hardly at all), so that really didn't have anything to do with his demeanor at the moment. He was upset. Really upset, at what he'd just said. And he definitely always wore his emotions on his sleeve. This wasn't the Prewett-trained Harry that had learned to control his temper at an age young enough that he'd never really exploded.
"Maybe you should leave and go find him." Said curtly.