(I do not own Supernatural, it's characters or anything affiliated with the lovely show. If you want, leave constructive criticism por favor! Thanks and enjoy!)

Castiel knew many things. He remembered the days of his service in Heaven. He remembered when Michael had him assigned with Uriel to Earth to find this "righteous man" that they claimed could be of use to stopping Lilith. He remembered seeing Dean for the first time. His soul was vibrant colors of green and brown and blue.

Castiel remembered seeing "the-boy-with-the-demon-blood" who was damned to fall. He remembered watching as the boy fell further into impure addiction. He remembered trying to stop the Winchesters from keeping Anna, a fallen angel, alive.

Castiel remembered many things. He remembered defending Dean Winchester, and he remembered dying. But he came back, new and improved. A seraph, no less.

Castiel knew a lot of things. He knew that he was damning himself the second he allowed Dean to leave Zachariah's sanctuary. He knew that he would fail against the archangel that came to defend Chuck.

Castiel knew many things.

But he did not know one thing. He never realized the bond the Winchesters held. Their self-sacrificing, unselfish, justified bond. Their need to save the world and tear up the script in the meantime. Castiel never knew how important it was that these two broken, sad, pathetic lives, could save the world over and over again.

Castiel knew many things and had seen many things on Earth. But his most treasured memory?

He would tell you of his battles with the Winchesters. Stopping Lucifer, derailing the apocalypse, and so much more. He would tell you the tales of Sam and Dean Winchester, how they saved the world and how, through it all, they became closer and had experienced so much. He would tell you of the fabled 'Team-Free-Will' and would tell you how he learned to give himself free will.

Castiel knew many things, but he had yet to know how his story would end. He knew, however, that the brothers would be by his side through it all.

And that, he thought, would be enough.