Looking up at the voice, Cas blinked in surprise before a grin flickered to life at the greeting. He was used to those around him giving him strange looks, muttering about him, though it hardly affected him. He'd been called worse things, after all, and none of it was fairly positive.
Instead, he merely settled one of the flower crowns on her head happily. "You seem very positive. The Earth would enjoy your friendship, I'm sure of it."A beat. "I'm Cas."He offered finally.