Cas hummed to himself and took another bite of his burger, grinning. He'd been cast down from heaven, and as Dean and Sam's younger sibling, you'd taken it upon yourself to make him enjoy life.

"This is... actually good," He said, glancing up at you, and then at your two brothers who were both working on a case in the corner of the hotel room. "Although I think we should be focusing on the apocalypse."

He would never tell Dean, but you're his favorite Winchester by far.