"Is my brother safe?" Nunnally demanded.

"Past the formalities already?" Zero asked. "Very well then. He is unharmed, and he is present. Lelouch, repeat your sister's words just now back to her. We wouldn't want you trying to sneak any messages through, would we?"

"Is my brother safe?" he repeated back. It was rather tempting to perhaps use Painted Black to interfere with the internal optics of the camera, perhaps send a message through that which only Nunnally could see... But no, it seemed they'd been rather careful about this as well. Very well lit up, weren't we?

-Lulu's Bizarre Rebellion Chapter 51