Concern rose up sharply in Kennie as he noticed how the young man who'd collided with him acted. Eyes narrowed in suspicion as he looked the guy over again, noted how his eyes didn't seem to focus, he shivered as well. And the hand on his sleeve...

Raising a hand up he pressed it to the guy's forehead, checking for a fever, but there was none to be found. Still, he was concerned. "Hey, no worries, it's okay. Though if you're going to walk around without a coat you should really use warming charms." He eased his wand out to start casting said warming charms for him, something he'd learned to do rather efficiently when he had been on the run from Snatchers back during the war.

"You don't look quite right, is there someone I can contact for you?" Yes, because despite any suspicions Kennie might have, he was a good guy and would help even a stranger when in need.