I Think I Owe You.
Draco smiled.
It wasn't a very nice smile, though it wasn't overly sinister. In fact, Ronald Weasley was incredibly disturbed by this particular smile, because—ironically enough—it wasn't very disturbing in the first place.
"Oy, Potter." Draco's voice was teasing.
"Malfoy?" Harry asked airily, a thin smirk on his face.
Needless to say, Ronald Weasley was even more disturbed at this point… What with his best friend smirking and his rival smiling.
"I think you owe me something."
Only Hermione caught what that implied, other than Harry of course. Ron, on the other hand, turned completely red.
"Harry owes you nothing, ferret!"
Draco looked at him, not being able to hold it in any longer. Flowing laughter released from his lips and Harry was smiling crookedly.
Hermione could only shake her head.
"No, I do owe him something, actually, Ron." Harry stated quite calmly, and Ron didn't like the way Draco raised an eyebrow and grinned lopsidedly. No, he decided, he didn't like it at all.
"Yes he does." Draco's voice was quiet, and Ron was suddenly growing very pale.
"And I'm going to give it to him." No one in the corridor was sure whether he was directing it more toward Draco or Ron.
Redheads are not as clueless as everyone pegs them to be. Or maybe they just peg Ron.
"Oh."
And Hermione is dragging him away, while Harry walks, with a very predatory stride, toward Malfoy.