AssClass Fanfiction
Yusei Matsui's bittersweet comedy about Class 3-E, a group of misfit students tasked with assassinating their teacher — a smiley-faced super-creature who is also the best educator they have ever had. The fandom writes Koro-sensei-lives fix-its by the hundreds, Karma/Nagisa as its flagship ship, and a wealth of class-as-family pieces about the year that changed every student in E class. Nagisa's bluntly underestimated lethality and Karma's sharp edges give writers endless material.
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What is AssClass fanfiction?
AssClass fanfiction is fan-created stories set in the Assassination Classroom universe. With over 15,000 works on Archive of Our Own, AssClass is one of the most popular fandoms in the fanfiction community.
These stories explore beloved characters like Nagisa Shiota, Karma Akabane, Koro-sensei, Kaede Kayano, and many more. Writers create everything from short one-shots to epic novel-length adventures, exploring relationships, alternate universes, and "what if" scenarios.
Most Popular AssClass Fanfics
These are the highest-rated AssClass stories on AO3, ranked by kudos from readers.
matchmaker matchmaker get off my back
by laurenshappenstobemyhusband
"So what are you looking for in a girl?" Kayano asks, eyes glinting. Karma pretends to ponder it. "Oh, definitely someone short, with a high voice. Cool colored hair is nice, maybe green or blue. And pigtails. Definitely pigtails." His taste is also decidedly male, but that’s none of their business.
BNHA and Others X Reader | NSFW/SFW Master Book
by orphan_account
Dreams can come true with all your favorite boys and girls here in my new shot section! (Mainly BNHA but others will be featured. Fluffy, angsty, cutesy, funny, horror fics, random scenarios, fever dreams, movies IT'S ALL HERE! Take your pick! Latest Chapter (Chapter 97): First Base (Katsuki Bakugou
5 times izuku was a badass and the 1 time he explained why
by iinterstellar
izuku starts attending ua after a year in kunugigaoka, only to find that the skills he gained in the assassination classroom are useful in hero training.or5 times where izuku scares class 1-a students with his assassination skills and the 1 time that he explained where he got them.
not all who wander are decent human beings
by ryuuzaou
Karma Akabane is desperate for a break in his routine. That's when someone jumped into his car, pressed a gun to his side, and told him to drive.Technically, it's exactly what he wanted. Just not what he expected.
just an outsider in the end.
by リリス - riris (arurun)
"Look, I really didn't mind the fact that I died and reincarnated into Ansatsu Kyoushitsu. I didn't really mind that you gave me a hole in the heart. That was a real dick move, but I didn't complain. So god, Void, whatever, I'm sorry I punched a student. Please recall my demotion into Class E. Pleas
Pick Me Up, Take Me Out
by firesandpixies
Karma annoys Nagisa with a multitude of cheesy pick-up lines.
To Save the World
by taetaenoway
Midoriya Izuku just wanted to escape Bakugou's bullying and achieve his dream of attending the prestigious UA. He assumed the cutthroat Kunugigaoka Junior High would prepare him for that. Too bad he was immediately booted to class 3-E for being quirkless. Shinsou Hitoshi planned for his time at Kunu
School watches Assassination Classroom
by TheSteinsGateFormula
Ritsu travels twenty years into the past to try to undo the apocalypse, but due to an unforeseen error, the whole of the third year of Kunugigaoka Junior High School has been brought along for the ride and are now trapped in a time-bubble for three days...things weren't off to a great start. *UNDER
Another Assassination Attempt
by mihori
Karma thought of another really good assassination plot and to make it happen he needs Nagisa's help.
Odd Future Time
by princessesandangels
Looking up at the shining gates of UA, Nagisa pulled out his anti-sensei knife and twirled the point along his index finger. If he could hitch a ride to Hawaii at Mach 20, save his friends from poisoning and go to outer space, he could definitely do this – face a new school year. A new class.A new h
Bye Bye Yesterday
by princessesandangels
After the assassination of Koro-sensei, Shiro survived to continue his experiments. And he kidnapped all of 3-E to be his first test subjects.His first Nomu.But something went wrong. Very wrong.And now, 27 terrified teenagers, one femme fatale and a terminally overworked government agent are waking
how i feel about you
by kagaroar (MistiGears)
''What is it, Karma? Cat got your tongue?'' Nagisa laughs, a high, tinkly, pretty thing of a laugh. Karma forgets what he was going to say in favour of the heat that spreads across his cheeks in response. He clicks his tongue against the roof of his mouth.''Oh, never mind,'' he says, tugging at the
Last Kiss of the Night
by ThePackWantstheD
Karma let out a huff of laughter. There was a slightly manic edge to it, although all of Karma's laughs seemed to have that, and an undertone of something both affectionate and angry. He said, "You know why I'm angry."Nagisa pursed his lips. He could, at the very least, take a guess at what the issu
Senbazuru
by Shrineart
You'd been lead into another office and given a brief overview of your new job. There’d been files on each student you were to take care of which he had handed over to you. Another file you were shown but not given a copy of. A dossier on your new coworker, an unkillable creature of speed and brilli
new mission alert!
by osamugiris
The doors to Height's Alliance opened slowly, but loud enough that everyone heard in the silence of the room, and Izuku wanted to drop dead."Problem Child," Aizawa called for him from behind. "You have... visitors."Izuku slowly turned around, hiding his phone, and Ritsu, behind his back. He smiled s
Keep Moving
by NerdofSpades
Izuku made it through his third year at Aldera. He graduated, both from his middle school and from the Assassination Classroom. Now, he has new problems to deal with. New classmates, new teachers, and a whole new type of weird that comes with studying at Japan's top hero school while also trying to
To Become a Hero
by taetaenoway
“How are we supposed to become heroes when the entire world sees us as assassins?” With Korosensei dead and the world saved, Midoriya, Shinsou and the rest of E-class just want to move on with their lives. However, with the media and public in constant fear of the child assassins who stopped the wo
It’s gonna be the future soon, and I won’t always be this way
by Casimir
Something bad happens to Akabane Karma, something that wakes him up in a world completely unlike his own- and yet, here he is. Using the knowledge and skills Koro-sensei had given him and saving the world again.Vietnamese translation, by Minami093: https://my.w.tt/ZIrj12Ne2PCancelled after some issu
They Were Made To Be
by uaigneach
Karmagisa Soulmate Au.From the day you are born you have words tattoed on your wrist. They are the first words that your soulmate will speak to you.
progress check
by osamugiris
"S-Sensei?"Lovro took a knife from his inner coat pocket and, without warning, threw it at him. Izuku heard his classmates around him gasping and yelling out for him, but Izuku simply caught it by the handle, centimetres from his face.Anxiety forgotten for a moment, Izuku grinned excitedly. "Hey, my
AssClass Fanfics by Length
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Best AssClass Fanfic Rec Lists
Popular AssClass Ships
KarmaGisa
Akabane Karma/Shiota Nagisa
Class E's sadistic genius and its unassuming bloodhound were friends before the class that changed everything, and their civil-war paintball duel over Koro-sensei's fate is the series' thesis fight. Karma is the first person who ever found Nagisa's hidden edge fascinating instead of frightening.
7,000 works →
KaraIri
Karasuma Tadaomi/Irina Jelavić
The Ministry of Defense's humorless handler and the world-class hitwoman assigned to seduce a tentacled teacher spent the year in a one-sided flirtation Karasuma treated as a personnel issue. Canon's epilogue marries them, vindicating Irina's longest con: falling for real.
1,500 works →
MaeIso
Isogai Yuuma/Maehara Hiroto
Class E's impoverished ikemen class rep and its careless playboy have been best friends since grade school, with Maehara leading the charge to defend Isogai's secret part-time job from the main campus's blackmail. Fandom upgraded the series' most natural friendship to its quiet background ship.
1,500 works →
Common AssClass Tropes
Popular Characters
Frequently Asked Questions
How many AssClass fanfics are on AO3?
There are over 15,000 AssClass fanfiction works on Archive of Our Own, making it one of the platform's largest fandoms.
What are the best AssClass ships?
Popular AssClass pairings include KarmaGisa, KaraIri, MaeIso. Each ship has thousands of dedicated stories exploring their relationship.
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