"Aww ain’t he a little angel," Dean says to Sam, watching the kitten version of his angelic best friend slumbering away.
The spell caught them all of guard, hitting the nearly-fallen angel hard, too powerless to deflect it and suffering the damage. Well, that’s what Dean called it initially, but he’s been warming up to his little furball with wings.
Sam just sort of smiles, still a bit unnerved by the situation, busy focusing on restoring Castiel to his human form, “Yeah, Dean. He’s cute.”
Dean only half hears Sam, leaning over the kitten, watching his body rise and fall with each soundless breath. He strokes the smooth fur with a rough hand, gentle in his touch, not wanting to disturb Castiel too much. A sparkle glows in his warm olive eyes when he hears the softest purr from the kitten’s throat, the biggest grin spreading on his face.
Sam smiles too, reading Dean’s face and knowing just what he’s thinking but will never say. Yeah, Castiel’s adorable.