Best Mature Canon Compliant Fanfics
The 25 most-loved mature canon compliant fanfics on AO3, ranked by kudos. These stories deepen rather than replace canon, and readers love returning to the source afterward unable to unsee what the fic filled in.
Top 25 Mature Canon Compliant Fanfics
Ranked by AO3 kudos. Every fic on this list is tagged with canon compliant and rated Mature.
All the Young Dudes
by MsKingBean89
LONG fic charting the marauders' time at Hogwarts (and beyond) from Remus' PoV - diversion from canon in that Remus's father died and he was raised in a children's home, and is a bit rough around the edges. Otherwise canon-compliant.1971 - 1995This IS a wolfstar fic, but incredibly slow burn. Litera
All the Young Dudes - Sirius's Perspective
by Rollercoasterwords
this is an ATYD fanfic first!!! and a harry potter fanfic only by necessity. this is literally just me rewriting each chapter of atyd but from Sirius's perspective bc i love this story so much and can't get enough of it. all credit for the original work goes to MsKingBean89 and if for some reason yo
The Ilya Rozanov Exposé
by nineteenohtwo
Perez Hilton ✅ @PerezHiltonViral: Married "gay" hockey star Ilya Rozanov caught IN PUBLIC sexting mystery woman. WITH RECEIPTS!
And like the cycle of the year, we begin again
by katherynefromphilly
Set after the Merlin Series 5 Finale "Diamond of the Day".Canon Compliant. In Character. Arthur Pendragon Returns.Cover art by Lao-Pendragon------For many long years Merlin waited.For the other part of his soul, for the other half of his life. He was born to serve Arthur. So that meant he was al
Question of the Day
by wilmonstan12345
Harris launches a new series for the Centaurs' social media: having the team answer his question of the day! This follows the season after The Long Game, when Shane joins the team on their road to the Stanley Cup, as they answer questions like who's the hottest/funniest/most perceptive Centaur, diff
oh my god you should see your faces
by writinginasnowglobe
A few months after the FanMail incident, Yuna Hollander decides to do what she does best. With the added benefit of having another son to lovingly manage, of course. The internet, unsurprisingly, loses its shit. Or, Shane and Ilya go on the press run to end all press runs, courtesy of Yuna Hollander
The Crown and the Crow
by Yuu_chi
Somewhere out there is your forever one wearing your Mark on their skin; it's just a matter of finding them.
and, so on
by vanillarchive
Crowley doesn’t remember heaven, but Aziraphale remembers him. originally published 2019-03-21. edited and updated 2020-05-19. the following fic has not been modified from its original version. it has been transferred to a different account.
Addicted
by Dancingdog
Coming to the conclusion that Valentino might have been drugging him with his venom for the past twelve years, Vox flees to the Hazbin Hotel to collect his thoughts. An injured Alastor is less-than-pleased to see him, but Vox begins remembering fragments of a past he didn't realise he'd forgotten an
Gravity
by bitsori
“Do you know he calls you his soulmate?”Minho almost spits his drink out when Changbin asks this. “Uh, yeah, he wrote this for a broadcast letter, once.”“No, I mean— he’s actually said it. Out loud. To me,” Changbin says, looking directly at Minho as if he’s trying to gauge the older’s reaction, bef
at the edge of what was
by BurningFairytales
He flips Neil’s phone open and scrolls through the call history. It’s not a long list; his own name is at the bottom, then there’s a call from Nicky one from Dan. There’s an outgoing call from Neil’s phone to Andrew’s – that day they went to Atlanta – and one to a number that isn’t saved but that An
Semantically Challenged
by TeamAlphaQ
Growing up is hard, no matter which way you look at it. Tweek's got his demons and Craig has his monsters, which of them wear human skin and which don't is irrelevant. They never asked for a solution, all either of them wanted was a friend. Somewhere along the way through, it became less about just
Bakugou Has a Boyfriend
by Froggybiscuit44
Bakugou Katsuki has a boyfriend. And Izuku didn't know."Look shithead, I’m only telling you because I don’t lie. Never have, never will. And sometimes I’m gonna be busy now, and that’ll be why.”Izuku nodded along, too worried to interrupt.“Kirishima knows too. He actually introduced us.” Katsuki rub
metamemory
by zhengtaes
Takemichi opened the journal and set his pen upon the crisp, blank paper. Hey, Takemichi. I don’t exactly know how to put this in an easier way, so I guess I’ll get to the point. This letter is coming from you from the future. Or, at least, a future you that came to the past. Before you throw this a
Sleeping With Ghosts
by lalazee
“I guess even heroes have to do their grocery shopping.”“Villains, too,” Katsuki said tightly.“Villains?” Deku blinked, gasping softly as he went to his tip toes and looked over the aisle divider. “Where? Shit, Kacchan, you’d better get on that!”Written for KatsuDeku Week 2017, Day 2: Heroes/Villain
Kings Reign
by idratherhaveyou
Directly following the events of Kings Rising. Damen is on bed rest and Laurent is taking care of him. What follows is their story and the story of two kingdoms becoming one.
pink carnation
by dandeaix
“Do you know?” says Angel. “The Dream Devil and the Nightmare Devil are lovers.” Aki lives a strange, normal human life.
It Was Not Repulsive
by WendigoDreaming
That leaves Daniel and Armand, still covered in dust, sitting in the living room.“So,” Daniel pours a glass from the copper pot and plops a sugar in because why not? He deserves a little treat after destroying an immortal marriage. “Does he get the penthouse in the divorce? Who signed the papers?”Ar
two truths and a liar
by andrealyn
Facing down the press junket for his book, Daniel Molloy is prepared to hype up his hit novel. He's less prepared to have Armand crash the tour to play bodyguard and doting assistant and he's definitely not ready to have his secrets spilled on a world stage because Armand wants to play games.The lon
The Visit
by codswallop
Patrick's best friend from high school comes to town, and does not hit it off with David.
Before 25
by loveatthirdsight
The fight with Muzan is over, but what is there left for Sanemi and Giyuu, who have already lost everything?
Thief at Sea
by Flyorine
When the Doctor's return throws Yaz's life into welcomed chaos, she decides to keep her distance, determined to simply enjoy the excitement of traveling through time and space. How will Yaz react, when a search for the TARDIS wrecks her plan and launches their relationship in a direction she once ho
The Lovers
by Valer48
After slipping into a coma following surgery to repair the damage to her brain, V awakens two years later to a living nightmare. Judy has moved on with her life, gotten married, and worst of all - doesn’t want V to come after her. But when a business opportunity draws Judy back to Night City with
For Whom the Bell Tolls
by candlewix
Perhaps Guts had only ever worshipped him like a wounded dog. With a devotion that was born out of something pitiful, whining, and irreparable. Some godless beast, curled up beneath the altar of a god—knowing naught about what it meant to be holy, but what it meant to be held in the arms of holiness
Provocative Little Moments in Time
by OnigiriCat4Ever
A compilation of spicier oneshot pieces about (mostly) Tohru and Kyo and occasional other characters, set after the Curse breaks and going forward.Most recent entry:Chapter 75: Releasing tension - (Tohru and Kyo, April, one month after graduation). Posted 6/26/26.-New jobs, and new lives, can be str
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About This List
This list of 25mature Canon Compliant fanfics spans 3,288,208 total words. Kudos range from 588 on the newest entries to 314,072 on the most established. 60% are marked complete — check the status flag before committing to a longfic. The most common rating is Mature (25 of 25 fics).
Recurring tags across this list: Canon Compliant · Post-Canon · Angst · Fluff · Hurt/Comfort.
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