Imagine a kindergarten with baby angels and human babies. Dean, Sam, Gabriel, and Cas becoming friends and playing together.
Dean instantly falls in love with his new friend’s tiny, fluffy black wings and gladly helps him clean them. Cas, from his side patiently sits and listens to Dean with his blue eyes opened wide, as the little freckled boy teaches him about various rock bands.
Sam steals a lot of candies and brings him to his new friend - Gabe. The baby angel does not tell him that he can make them appear instantly, as Sam has to prove what a good friend he can be.
Years will pass and they will grow up. Their friendship will turn into something else, much stronger and beautiful but the time has not come to tell that story. Not yet.