Cas: Little age 4-5
Dean: Daddy
Sam: Uncle Sammy
Dean, Sam and Cas were driving home from a hunt and Dean was angry. He was angry that Sam had done exactly what he said not to do and angry that Cas followed him.
Cas was slipping into headspace quickly. He's little self could sense his daddy's anger. "Daddy?" He said softly. Dean looked in the review mirror at him. Dean softened his eyes and said, "yes, sweetheart," as he looked back at the road. "Why you angry Daddy?" Asked Cas and he dusted his eye.
Dean sighed as Sam handed Cas his little blanket. "I'm not angry sweetheart," he answered at he stopped at a red light. "Why don't you take a nap, we'll be home soon," said Dean as he reached back and covered Cas up with one arm. Cas grabbed deans hand and kissed it before snuggling down and taking a much needed nap.
Dean smiled at his boy before he looked back at the road and started driving again.