Leo would nod once again. "Mm-hmm... and to you as well, Light."
As time passes by, however, he raises an eyebrow at the strange bumping coming from the vent above him.
"Hmm... sounds like someone's in the Ventilation Chamber... hope they realize that there's a loose screw right there near the center of the room..." he would think to himself, before shrugging and returning to his studies.