Harry leaned against the front of Draco's desk as the blond glared at him. It was a good glare and probably would have worked on someone else. Harry, however, had been facing down that glare since he was eleven years old. Harry only smiled in the face of it. An honest smile. No mocking. He'd found that often happiness was the best tool against anger or irritation. It was like oil to flames.
He was amused that, despite Draco's irritation, he still gave a complete summary of his knowledge on the subject. Professional, he supposed, but unnecessary. Harry wasn't working the case and he wasn't overly concerned with it outside of how long it would last.
When Draco dismissed him, Harry chuckled once more. "You're no fun as a girl," he responded, pushing away from the desk and heading back to the door. No, their interactions certainly weren't the same like this ,... though he did enjoy the fact that Draco was shorter then him like this. "See you around, Malfoy."