Maybe this one?

http://archiveofourown.org/works/932002

It's really hilarious!

Hey,

That's my fav thing too :)) Hell, there aren't too much, sadly...! But here, my favs:

Brother Where You Bound (http://archiveofourown.org/works/6155857) by Aini_NuFire
Tags: Castiel & Gabriel - Gabriel & Lucifer (Supernatural) - Gabriel (Supernatural) - Castiel - Lucifer (Supernatural) - Episode: s05e19 Hammer of the Gods - episode AU - Heavy Angst - Hurt/Comfort - Hurt Castiel - Castiel Whump - Hurt Gabriel - Gabriel Lives - Big Brother Gabriel - Big Brother Lucifer
Words: 20,328
Summary: AU 5x19 Instead of killing Gabriel, Lucifer merely wounds him and takes him prisoner. The Devil claims he only wants to protect his brother, which Gabriel isn’t buying. He should focus on escaping, but there’s another captive he just can’t leave behind…

Jumping Channels (http://archiveofourown.org/works/5184971) by Aini_NuFire
Tags: Castiel & Dean Winchester & Sam Winchester - Castiel & Gabriel - Dean Winchester - Sam Winchester - Castiel - Gabriel (Supernatural) - Episode: s05e08 Changing Channels - episode AU - Action/Adventure - Hurt/Comfort - Castiel Whump - Hurt Castiel - quasi-crossovers - Family Issues - Family Feels - Hurt Gabriel - Protective Dean Winchester - Protective Gabriel - Angst and Humor
Words: 49,902
Summary: Gabriel has the Winchesters right where he wants them… until a vengeful pagan goddess hijacks his pocket dimension. Now the infamous Trickster/archangel will need the boys’ help if they’re all going to get out of TV land alive.

Deus Ex Machina (http://archiveofourown.org/works/4054165) by carzla
Tags: Castiel/Dean Winchester - Dean Winchester - Sam Winchester - Castiel - God (Supernatural) - Chuck Shurley - Michael (Supernatural) - Lucifer (Supernatural) - Gabriel (Supernatural) - Raphael (Supernatural) - Background Relationships - Episode: s10e23 My Brother's Keeper - Fix-It - Family - Fluff
Part 1 of the Deus Ex Machina series » Words: 4998
Summary: The Darkness had been unleashed, and the Winchesters were up shit creek without a paddle. Well, make that without a boat and heading towards a sheer drop. Fortunately for them, someone finally decided that it was about time He took an interest in Earth again.

Family Once (http://archiveofourown.org/works/4958275) by hnatiwa
Tags: Castiel/Dean Winchester - Castiel & Gabriel - Castiel (Supernatural) - Gabriel (Supernatural) - Emotional Hurt/Comfort - Angel Healing - Heartache - Prayer Broken Families - Broken Castiel - Suicidal Thoughts
Words: 2,185
Summary: Castiel is in trouble when his broken heart sends the Angel spiraling out of control. If he cannot live in a world with Dean Winchester what other reason does he have to exist anymore?

IKEA 'verse (http://archiveofourown.org/series/272112) by MightyMidget
Stats: Series Updated: 2016-03-01 Words: 89,190 Works: 3 Complete: No

Chiral (http://archiveofourown.org/works/1121897) by BoundLight
Tags: Graphic Depictions Of Violence - Castiel/Dean Winchester - Gabriel/Sam Winchester - Michael/Dean Winchester - Castiel Dean Winchester - Sam Winchester - Gabriel (Supernatural) - Michael (Supernatural) - Original Characters - AU Soulmates - Michael is a dick - Violence - Reincarnation - Demon!Dean - demon!Sam - Prisoner of War - Torture - Hurt/Comfort
Words: 49,614
Summary: After watching humans find love in the oddest places, angels have decided to look to hell to find their soulmates. When Michael finds Dean, he decides to claim him as his own. Dean has other ideas, especially when he meets an angel named Castiel. Michael is not amused, and will do everything in his power to keep them from each other.

part two, because the lj was cutting about my message...

Someone to Care For (http://archiveofourown.org/works/928007) by Zacia
Tags: Castiel/Dean Winchester - Jessica Moore/Sam Winchester - past Lisa Braeden/Dean Winchester - Relationship Becky Rosen/Chuck Shurley - Meg Masters/you'll find out later - Maggie Stark - Don Stark - Balthazar (Supernatural) - Benny Lafitte - Bela Talbot - Chuck Shurley - Becky Rosen - Meg Masters - Kevin Tran - Ben Braeden - Gabriel (Supernatural) - Raphael (Supernatural) - Crowley - John Winchester - Charlie Bradbury - Garth Fitzgerald IV - Michael (Supernatural) - Lucifer (Supernatural) - Naomi (Supernatural) - Bartholomew (Supernatural) - AU - Slow Build - naive!Cas - Somewhat Fluffy - Comedy - Romance - correction it is pretty darn fluffy and feel good like - for now - annoyed!Sam - Multiple Pairings - Kind of like a romance tv show with all these wacky people lol - Romantic Comedy - Explicit Consent - insecure moments - Awkward Sex - very slow build
Words: 168,618 Part 1 of Someone To Care For Verse
Summary: After a divorce lands him living back with his brother, Dean finds himself feeling absolutely useless and wanting to be needed. He meets his strange neighbor, Castiel, who can hardly take care of himself and desperately needs someone to take him under their wing. Could they find what they need in each other?

If I find more, I will let you know. I would read others fics about it too, so I waiting the helping comments here xD

Lol, I just found those, but I didn't read any oh this

When Angels Fall (https://www.fanfiction.net/s/9399577/1/When-Angels-Fall) By: CherylB1964 (ffc.net ? unfinished? as I see)
Metatron's spell to cast the angels from Heaven has unexpected consequences. Gabriel and Raphael are resurrected and Lucifer and Michael are freed from the cage. Four pissed off Archangels are joined together in one common goal, restore Heaven before the demons overrun the Earth.
Family/Hurt/Comfort - Gabriel, Lucifer, Michael, Raphael
Chapters: 129 - Words: 175,432 Updated: Nov 15, 2013 - Published: Jun 17, 2013

Team WHAT?! (https://www.fanfiction.net/s/8084094/1/Team-WHAT) By: Lucillia
Sam and Dean are just vessels right? Right?
Humor - Lucifer, Michael, Castiel, Gabriel
Chapters: 17 - Words: 17,653 - Reviews: 348 - Favs: 1,288 - Follows: 819 - Updated: Sep 21, 2014 - Published: May 4, 2012 - Status: Complete

Sam Lucifer Winchester (http://archiveofourown.org/works/665058/chapters/1214166) by kirallie
Words: 19467
Summary: The Seals have been broken but what happens next is not what anyone expected.

Notes Tied To Balloons (https://www.fanfiction.net/s/6618906/1/Notes-Tied-To-Balloons) By: crOwnlEssG
As a fledgling, Castiel had a very big, very interesting family. Each story will stand on its own and will consist of three chapters. Final story's up: All great things come from humble beginnings. Humble beginnings become great things when someone believes in them.
Family/Adventure - Castiel
Status: Complete Chapters: 27 - Words: 112,611

make it on your own (http://archiveofourown.org/works/3582438/chapters/7898454) by SailorChibi
Summary: Then: when Gabriel left heaven, he took Castiel along with him. That's why when, centuries later, Dean Winchester goes hunting a trickster while his brother is at Stanford, he meets Castiel instead. And no matter how much Gabriel warns him off, Castiel wants this beautiful little hunter as his own, even if it's only for a few nights.
Now: Dean is devastated by Sam's death at the hands of Jake Talley. On his way to sell his soul to revive Sam, Dean prays for the first time in years. His prayer is answered by someone he hasn't seen in over three years: someone who turns out to be an angel, someone who vows to care for him, someone who wants Dean as a mate. The angel Castiel.

We Found Love (In A Hopeless Place) (http://archiveofourown.org/works/415182/chapters/689746) by TalesFromPerdition
Summary: Dean and Sam Winchester struggle to survive when their alcoholic father abandons them. Castiel Novak has turned to drugs in his own father's absence. As their lives spiral out of control, can their new friendship save them, or will it be a catalyst for destruction?
Words: 405313

And they did rec posingasme (http://archiveofourown.org/users/posingasme/pseuds/posingasme/works?fandom_id=27)'s works on ao3, like "angels as family, you could read almost all of the fics".