Oh, dear God, that was just the cutest, most adorable thing ever. Castiel confronted with such cuteness, Dean such a badass little kitty protecting his brother, poor, wee kitty Sam with his markings and the demon blood...there are not words for how much I enjoyed this. Thank you so much for posting!

Also, this line is possibly the best thing ever: Castiel picked up the kittens who had started the Apocalypse and tucked them into his side pockets.