Whether you loved the series finale of Supernatural or not, there are definitely some things that need to be fixed, added, or tweaked. From Castiel making an appearance to Dean never dying in the first place, here are 10 Supernatural fix-it fics that you can read over on Archive of Our Own aka the best fanfiction website out there. Warning: Destiel runs true in all of these fics because fanfic writers know what we need!
1. As It Should Be by Loser_Angel_666
Summary: Jack needs Cas’ help to rebuild heaven, but when Dean gets impaled… What if Sam hadn’t been a dumbass and actually called an ambulance?
Why you should read it: By far the best and most honest portrayal of Cas, Dean, Sam, and Jack that fit perfectly for the world created over 15 years.
2. A Better Place, And All That by frecklesandwings
Summary: Dean and Cas meet in Heaven. There’s some stuff Dean needs to say.
“I got a dog. After Chuck and everything.”
Cas smiles softly.
“The stuff you said…” Dean tries as hard as he can. He owns it to Cas. “It mattered, you know? It changed everything.”
Why you should read it: Dean gets to say “I love you” back.
3. Keeping Out the Cold by pixiedusts
Summary: Dean appreciates their shift into normalcy, because they’ve suffered enough.
Why you should read it: It’s a super soft Destiel that ignores all the pain of the series finale.
4. Forever It Is by impatient14
Summary: Picking up directly after the camera stops rolling in 15×20, Sam and Dean look to their new life in Heaven.
Why you should read it: The Winchesters get to choose what they want to do at the end of it all and Dean confronts his feelings for Castiel aka Destiel. Jack also makes an adorable appearance and plays God.
5. I’ve Seen the Light by pieprincess_andthe_fallenangel
Summary: Dean has come to terms with what he wants, now he just needs to take it.
Why you should read it: Dean lets himself feel happiness and love. And Castiel appears on the bridge, reuniting with Dean, before Sam pops shows up.
6. I Talked To The Man In The Moon
Summary: Castiel rips out his grace in order to become human and escape the Empty.
“You just had to tell me you loved me right when I couldn’t say it back.”
Why you should read it: Human Castiel’s POV is explored and he finally gets the peace that he’s always wanted, this time with Dean by his side.

7. Supernatural Fix-it-Fic (15×20 Rewrite)
Summary: This is it, folks. The ending that the SPN cast, characters, and fandom deserved. My interpretation of what should’ve gone down in the final episode. Hopefully this helps everyone say goodbye to the characters that they’ve grown with and loved for 15 years now. NOTE: I did keep some details from the original episode but completely changed the plot–don’t give up on it when you see that they’re still hunting those vamps in Canton. I promise y’all they get a good ending).
Why you should read it: Great balance between Sam and Dean POV with Sam/Eileen and a hint of upcoming Destiel. Also Dean doesn’t die a stupid death.
8. The Noise of Stars by depugnare
Summary: All things must come to an end. This is what was written and so it shall be.
It happens more than once.
Over and over, Castiel must reckon with mortality. With God. With the fragility of human life. With the way Dean looks lying dead on the ground, blood spilled for some meaningless cause. The eternal fate of a Righteous Man. Over and over again Sam pleads and begs for a new start. For peace. Castiel cannot give it to him.
He has had enough.
Why you should read it: Fix-it fic from Castiel’s POV that goes over his entire journey in a succinct and powerful manner. Destiel is a driving force in why he does…well, everything.
9. The Wayward Sons by tyranusfan
Summary: Broken souls take time to heal, even in Paradise. Tag for 15×20 “Carry On”
Why you should read it: It’s a continuation of what happened on the bridge plus some Adam Milligan for fans of the youngest brother.
10. He Who Thought He Knew Infinity by starry_open_curio
Summary: Cas finds Dean in heaven and learns that there’s more. What does it mean to fall, to break? What have Jack and Cas been up to? Set after 15×20.
Why you should read it: Castiel’s POV is explored after Jack pulls him from the darkness. We experience his journey into becoming something more while still loving Dean.