Imagine if Castiel had been Dean's guardian angel since birth. His story

God sends a young Castiel to Earth to protect the Winchesters, but Castiel is merely a fledgling the task might be harder than originally thought.

He had flown into the pit, hellfire searing his wings and painful impurities tainting his grace, and wondered all the while if this was really worth it. Laying eyes on Dean Winchester for the first time he knew that it was. *updates on Tuesdays*

In which Dean is the new kid and everyone seems to like him except for the one person he's most intrigued by. A town plagued by family issues and betrayal, high school is not quite what Dean signed up for.

Dean/Castiel AU: Gabriel decides to hire a prostitute for his virgin brother Castiel as a joke, but instead accidentally hires Dean, a professional Dom. The moment Dean first lays a hand on him, Castiel knows he is lost.

The coming together of one Dean Winchester and one Castiel Novak. "Because, on the USS Destiel, there's no time for angst." Human AU. Slash. OBVIOUSLY Destiel.

Castiel still isn't clear on what he did wrong at the brothel, so Dean decides to give him some pointers on what to do next time. Because he's a good friend like that. 5.03 missing scene, Dean/Cas, slash.

Set after successfully averting the Apocalypse, Sam is safe and everyone's happy - the only problem they face is the now human Castiel gracing Bobby's home with a sour attitude to his situation. Teaching stubborn Castiel to deal with a human body in the midst of the search for his Grace is both difficult and increasingly endearing for Dean. AU-ish, progressing Destiel throughout.