Castiel sits up next to Dean, his blue eyes open wide as he refrains from sleeping, mentally fighting off the tantalising urges to curl his tail round his paws and let his head droop. He won’t let himself rest, not while he’s watching out for Dean.
He leans against the slumbering kitten, Dean’s entire body rising and falling with each gentle breath. He’s exhausted after a busy day of hunting, taking advantage of the soft blanket left on the couch, settling in the folds. He leaves himself open for Castiel to lie next to him, hoping that his friend will decide to abandon his vigil and sleep by his side.
But Castiel, unaware of Dean’s intentions, stays awake, content with watching. And for now, Dean’s just happy feeling black fur pressed to his leg, his tail wrapping around the other kitten’s back. And with each exhale, he purrs, a lazy little snore that shows that he’s happy too.