[[http://archiveofourown.org/works/393458/chapters/646349 The Arrangements 'verse]]: [[{{Series/Supernatural}} Team Free Will]] meets [[Literature/GoodOmens everyone's favourite angel and demon]], and everything spirals from there.

A ''long'' (90k+) fic by [[http://icarus_chained.livejournal.com/ icarus_chained]].

An AlternateUniverse story where sometime post ''Supernatural'' episode 5x10/"Heaven and Hell", Dean, Castiel, and Sam run into Aziraphale and Crowley, and (after some initial confusion/animosity) the five of them team up, gaining a few more allies along the way...

Note: ''Arrangements'' is technically unfinished, due to complications in the author's life; what's marked as the last chapter on [=A03=] is actually a summary of how the final chapters were intended to go. However, it's a very thorough summary, often feeling like it could be a fic in itself, and so the story feels quite complete.

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!!'''This fanfic provides examples of:'''
* {{Adorkable}}: Aziraphale and Cas
* AffablyEvil: Crowley
* [[DemonicPossession Angelic and Demonic Possession]]: The fic manages to more-or-less reconcile the "discorporation" of ''[[{{Literature/GoodOmens}} Good Omens]]'' with the vessels of ''{{Series/Supernatural}}''.
* BadassNormal: Dean Winchester, of course.
* BadBoss:
** Crowley, as a demon, is technically under Lucifer. So... yeah.
** The angels, meanwhile, aren't too much better. (For the most part.)
* BecauseDestinySaysSo: Well, since the goal of our heroes is to deliberately ''avert'' "destiny"...
* BewareTheNiceOnes: Happens a ''lot''.
** ''Don't'' get Aziraphale mad. In particular, if you kidnap [[spoiler: his demon]], his face will go blank.
--> Not blank like 'I'm in shock and don't know what I'm doing'. It was blank like 'I've just switched off every emotion that might stop me from doing what I need to do, and mercy and fear were the first to go.'
** Suggesting that [[spoiler:Crowley might be ''actually'' trying to lure Aziraphale to the DarkSide]] is a pretty bad idea, too. Torturing and almost killing [[spoiler:an archangel]] in front of him isn't much smarter.
* BlatantLies: For a ''very'' short time, Aziraphale and Crowley attempt to appear strictly platonic.
--> '''Aziraphale:''' It's a ''business'' arrangement.
--> '''Dean's inner monologue/narration:''' ...and 'business arrangement' my cute little ''ass''...
* CardCarryingVillain: Crowley, although the villain part is debatable.
* CastFromHitPoints: Castiel, in order to heal [[spoiler: Gabriel]].
* ContrivedCoincidence: Team Free Will seeing Aziraphale and Crowley under the apple tree.
* CoolCar: Both the Impala and the Bentley. The ''[[AvertedTrope hot pink]]'' limo (complete with inner disco ball), though... not so much.
* CoolOldGuy: Bobby Singer, of course.
* [[DidYouJustPunchOutCthulhu Did You Just Tell The Devil To Go Fuck Himself?]]
* DoesThisRemindYouOfAnything: Touching an Angel's wings is always discussed as though one might talk about sex. It's even refereed to as "making love" at one point. On a darker note, [[spoiler:Lucifer's maiming of Gabriel's wings is treated like rape.]]
* EldritchAbomination: Crowley briefly turns into one, the angels' true forms might also count.
* EroticEating: A side effect of giving angels cream buns.
* EveryoneCanSeeIt: Both [[spoiler:Dean-and-Castiel and]] Aziraphale-and-Crowley. The latter pair initially tries to put on a facade of simple friendship coming from 6000 years with only each other for consistent company, but they fool no one. The first one is initially "simple" UST, but eventually TheyDo.
* FallenAngel: Castiel, of course, as it takes place during season 5. Crowley, of course, never ''fell'' so much as "Sauntered Vaguely Downwards"... [[spoiler: or maybe not?]]
* FlamingSword: According to Aziraphale, wielding it's like learning how to ride a bike... you never really do forget.
* TheFundamentalist: Zachariah.
* GetYourMindOutOfTheGutter: Gabriel's reaction to the implication that he and Lucifer really ''[[IncestIsRelative trusted]]'' each other.
* GoodIsNotNice: Just about everyone, but especially the forces of Heaven.
* HeroicBSOD: Can actually [[spoiler: kill an angel]] if it lasts long enough.
* [[IHaveYourWife I Have Your Son]]: How Lucifer kidnaps [[spoiler: Crowley]]: he pulls this on Anansi.
* IKnowYourTrueName: Lucifer claims to know Crowley's.
* ImNotAHeroIm: Crowley. He's a demon. Don't forget it.
* ItsAllMyFault: Dean's default reaction. [[DopeSlap Aziraphale demonstrates what he thinks about that]].
* LetsGetDangerous: ''Aziraphale''
* LightIsNotGood: Lucifer
* LoopholeAbuse: Crowley "tempting" Aziraphale during the Crusades.
* TheMafia: Crowley and Aziraphale know people.
* ManipulativeBastard: Crowley, natch.
** Raphael. [[spoiler: Deliberately withholding medical treatment for six thousand years solely to give your side a martyr is kind of really dickish.]]
* NiceJobBreakingItHero: Said almost by name, though not really a case: after Aziraphale makes a careless reference to the Apoca-Wasn't, utterly horrifying the various people not in-the-know, Crowley points out his mistake.
--> '''Crowley:''' "Nice job breaking the humans. Did you ''forget'' what [[AntiAntiChrist Adam]] did last time?"
* NotSoDifferent: [[spoiler: Michael and Lucifer. On a larger scale, Heaven and Hell]]
* OfficialCouple: [[spoiler: Dean/Castiel, Sam/Gabriel]] Aziraphale/Crowley.
* OneManArmy: Almost everybody at one point or another.
* OOCIsSeriousBusiness: Not for a specific character, but angels in general are not supposed to let others touch their wings. Aziraphale letting Crowley touch his shows just how much he trusts him.
* PayEvilUntoEvil: Crowley called in a favor with Gabriel to get him to go after [[ThoseWackyNazis Aribert]] [[http://en.wikipedia.org/wiki/Aribert_Heim Heim]].
* RedEyesTakeWarning: From ''[[BewareTheNiceOnes Aziraphale]]'', of all people. Of course, that's what happens when [[spoiler: the devil kidnaps Crowley]]...
* RelationshipUpgrade: [[spoiler: There are two during the course of the story, and one that happened off-screen]]: Dean/Castiel, [[spoiler:Sam/Gabriel]], and to no one's surprise, Aziraphale/Crowley.
* ScarsAreForever: Subverted. Gabriel's had his scars for six millennia, but [[spoiler: only because Raphael refused to heal them.]]
* StepfordSmiler: Most of the good angels; in fact, the only angels who are more stable and straightforward are like Zachariah.
--> Not bi-polar, no. Not swinging from cheerful to grim. Just putting the cheerful on ''over'' the grim, whenever they could, whenever they could bear it. Even Gabriel, maybe. Putting smiles and cheer and smartass remarks over the knowledge that their world was slowly falling apart around them, and hoping that if they just did it enough, if they just smiled enough, they might come to believe there was something worth smiling about. Not so different from him and Sam, when it came down to it. Not so different from ''any'' of them.
* ThatCameOutWrong / DiggingYourselfDeeper / VerbalBackspace: While not an innuendo, Aziraphale didn't quite mean to say that he and Crowley made a hobby of Apocalypses; he just meant to say that after the [[GoodOmens last one]], they've gotten rather good at them. Ah, wait...
* ThisWasHisTrueForm: Crowley, if sufficiently battered, may [[spoiler: turn back into a snake.]]
* TrueCompanions: Both Team Free Will and Aziraphale-and-Crowley at the start of the story; Castiel, Dean, Sam, [[spoiler:Gabriel]], Aziraphale, and Crowley all end up pretty well attached to each other by the end.
** Bobby remains the father figure to Dean and Sam that he is in canon.
* UnresolvedSexualTension -> TheyDo: [[spoiler:Dean and Castiel.]] Also, sometime between the last Apocalypse(-that-didn't) and this one, Aziraphale and Crowley.
* WhatCouldHaveBeen: The last chapter is technically a summary of how the last ''several'' chapters would have gone if the author had had time to write them. Though very good in itself, it does make one wish we'd gotten to see it play out over the full length it was originally intended to take...
* WhatYouAreInTheDark: Aziraphale trusts Crowley because [[spoiler: he didn't kill him, even at his most vulnerable.]]