Dean was a hunter. He saw himself as a killer. He was never one for kids.

Until he found you during a hunt. You were a hatchling. A newborn angel.

He was immediately enamored with you. Always bringing you with him, showing you his favorite things and places, even showing you to his brother Sam.

Until one day, his friend Castiel, an angel, had suddenly popped in for a visit. They immediately began fighting, when Castiel demanded that he should be the one who raised you.

Castiel: "Dean, listen to me. She is a hatchling! We haven't had one in decades! She is the responsibility of heaven, I will be her father!"

Castiel spoke with a glare, as he moved past Dean to find you.

Dean: "You can fuck off, dick bag. I can raise her fine on my own! Sammy and I are already her family!"

Yet Dean was attached to you, and absolutely refused to give you up. He stood in Castiel's way.