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Assassination Classroom x Reader by miestardustscribbles
Fandoms: Assassination Classroom
09 Oct 2025
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You are Kunugigaoka's top student, student council president, and a master of deception. While admired by your peers and close to Gakushu Asano, the son of the ruthless principal, you hide your true identity as the youngest prodigy of a renowned family of assassins. Torn between your calculated facade and the brutal expectations of your family, your life takes a darker turn when your mother orders you to assassinate Principal Asano in exchange for freedom.
But hesitation during the mission exposes your identity, forcing you into an impossible situation: infiltrate Class 3-E under the guise of a mysterious transfer student to eliminate the alien teacher, Koro-sensei.
As you navigate your new role, your bond with Gakushu deepens, but Class 3-E's enigmatic Karma Akabane begins to challenge your indifference. Caught between Gakushu's quiet admiration and Karma's unpredictable intensity, you find yourself questioning not just your loyalties, but your own heart.
In a world of masks, deception, and assassinations, will you succeed in your mission, or will your conflicting emotions and divided loyalties become your ultimate undoing?
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Never in his 15 years had Nagisa thought he would have to be in a fake relationship to protect his class's secret. But here he is, in a fake and unhappy relationship with a student from the A-Class.
And a jealous Karma who is unable to admit to his feelings for his best friend.
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The class had come so close to assassinating Koro-Sensei, but with that absolute defence form of his, they were back to square one. But that attempt seems to have tired out quite a few of the students.
But not the ones who should be tired.
Does a slightly different group of students still lead to the same outcome? Who knows...
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All the things that I've done, I can't erase, but I'll try. by boringstoriesss
Fandoms: Assassination Classroom, 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga)
08 Oct 2025
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A Deku as Nagisa crossover fic.
His lessons on hiding the truth were from the Japanese Government itself who asked a bunch of middle schoolers not to even tell their parents that they were being trained to kill, regardless of how many times they almost got killed in return. In fact, Nagisa was still lying to his classmates at UA about that, and they got paid ten billion yen to ensure that they never talked to anyone about their third year in middle school. So why was the past slipping out? Will his classmates find out what secret's he is hiding?
Mostly focusing on the bonds between the children with some bigger events coming in. :)
REWRITTEN ON 10/13 -
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Summary
One day, a new form of life — one that now looks almost completely human — awakens, and immediately understands one simple truth:
he was never supposed to open his eyes again. He died.
Koro-sensei doesn’t know how many years have passed since his death.
But in that time, his beloved students have grown into remarkable adults, built families of their own, and built a world he once only dreamed of.
And now, by a twist of fate, he finds himself sitting in the same classroom again — this time, as a student among the children of his former students.
He keeps his identity secret, partly out of fear of becoming a sensation again — the “Unkillable Teacher” reborn — but also for reasons far more personal.
Because of two children — Shiota Hanari and Akabane Akito — he still exists.
And those children have no idea what it means to simply be children.
Once a teacher, always a teacher.
If Koro-sensei has been granted a second life, then he’ll use it to teach them — even if it’s the hardest lesson of all.That, he thinks, is what you’d truly call the Rebirth of Koro-sensei!
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Wolf in Sheep's Clothing // A Classroom of the Elite | Assassination Classroom Story by Pita_the_Bread
Fandoms: Assassination Classroom, ようこそ実力至上主義の教室へ | Youkoso Jitsuryoku Shijou Shugi no Kyoushitsu e | Classroom of the Elite (Anime), ようこそ実力至上主義の教室へ - 衣笠彰梧 | Classroom of the Elite - Kinugasa Shougo
04 Oct 2025
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"You're so worked up about winning in life and being on top, number 1, that you skip over defining what that even means. Is an academic genius the winner in a room of world-class athletes? When you think about it, are you truly winning against me if you're the only one invested in the competition?
I mean, sure! In a room of 100 people, get 51 on board and you decide what's black and white. But give me a call when you finish probing half of 8 billion people about their life philosophy.
And between you and me, Kiyotaka. If you set your finish line according to other people's wishes, you've already thrown in the towel. You see, unlike the rest of our peers here, I'm not looking to peak in this Highschool. What about you?"
[A crossover between Classroom of the Elite and Assassination Classroom post-Koro-sensei death, featuring an original character and returning ones. All in hopes of a slightly different approach and feel to a COTE Story compared to most Kiyotaka 2.0 ones. ]
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Who would have thought that after two years of searching and guilt, it would be the destruction of the moon that allowed him to find who he’d been looking for? Reunion, however, is just the beginning for Karma.
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Tied down by manners, you’ll never make it to hell by sleepykasas
Fandoms: Assassination Classroom
30 Sep 2025
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Nagisa becomes an assassin and he's been assigned a target who works in the government, except his security is top notch and Nagisa can't even get close to his target unless he uses his old friend from junior high, Karma Akabane.
He has to manage lying about not using Karma just for his assassination while trying to find out more information about his target, not falling inlove with Karma and trying to do other assassinations on top of it all.
[New chapters every week or so]
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MSA: Missing Pieces by DarkSoul7714
Fandoms: Assassination Classroom, 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga)
29 Sep 2025
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Have you ever wondered what really happened in those last 15 years of the gap after Koro-sensei's death and the start of the main story, 'My Sensei is an Assassin'? So here it is, an anthology series that will tell you about what happened in that time gap in pieces.
Read my other story first. Well, it does not matter if you read or not.
The arcs are jumbled up, so be careful what you are reading. Some are romantic and light-hearted comedies, while some are dark as void with torture and gore.
Series
- Part 1 of Assassin and Heroes
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Asano Gakushū. One look at him, everyone would think he is the most ideal and perfect child anyone wants.
But, no. A bastard from Class E told him a truth he hadn’t realized and that made him question everything about himself. Asano Gakushū, scared and stiff.
He questioned himself. Why does he look up female fashion in magazines, dreaming of….of it? Why does he feel afraid of his father? His father never lifted his hand to hit him or ever raised his voice at him. Other children had it worse than him, he have heard his classmates many complains.
A certain café with a certain person from Class E, everything changed. Asano Gakushū doesn’t know if he likes the changes.
(Update every one week with one chapter….hopefully)
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Autobot Defense Unit by Crusherboy931
Fandoms: Transformers - All Media Types, Assassination Classroom
24 Sep 2025
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18 to 19 years ago, an Alien Ship crash-landed into the base of Mount Fuji. Present day, a bunch of young adults from Japan, plus one from the states, are called upon by the Ministry of Extraterrestrial Defense for an International Taskforce to defend earth from the forces of Evil. and guess what, THEY PILOT DRONES! Also for those who are wondering where Korosensei is, I named him Sone Noburo. I gave him that name in another story on FFN that I will soon be posting here. Here he never got his tentacles but he is working for the government
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Midoriya has 30 siblings?! by Annoyingmous
Fandoms: 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga), Assassination Classroom, New Dangan Ronpa V3: Everyone's New Semester of Killing
23 Sep 2025
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Deku invites some of his classmates to chill for the weekend. They are all really surprised at his house bills and his relative list. And then they find the other house. They met and everything bad that could happen happened: including MANY emergency calls, MANY fire alarms, MANY murders and a lotta chaos. :D
This is my first fanfic so… idk.
I didn’t add archive warnings but if you’re not interested in smut then don’t read Chapter 6, 11 and any other Mineta/Okajima pov.
If anyone would like to add prompt, please do. (My ideas will run out sometime)
1k and 500 hundred hit Milestone edit~ :D
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Just the normal events of the anime with my oc thrown in the mix :> Plus some minor writing changes to make things a bit more fun for me. Like skipping some filler arcs to put more focus on the stuff that I wana put focus on
This anime/ manga has been such a comfort series for me as someone who also really struggled in middle school and just school in general. Young me always made up so many stories of herself interacting with the characters and me as an adult want to create a work that a younger me would be happy to read.
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Asano and Ritsu are talking until they are noticed
- Language:
- English
- Words:
- 86
- Chapters:
- 1/1
- Kudos:
- 13
- Hits:
- 124
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Nagisa Shiota was in for a shock when Ren Sakakibara, member of The Big Five, showed up at his front door one day. Between test scores, assassinating your teacher, fake relationship drama, not disappointing your ridiculous mother, and being unknowingly in love with your best friend? You could say things were complicated.
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Asano and Isogai have always been friends.
Can be read as romantic or platonic.
Also the ending isn't that sad and I might add another chapter but we'll see
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Karma and Nagisa’s friendship was starting to grow—not in a friendly manner. At least, to Karma.
His heart can’t help but skip a beat whenever he feels his hand brush his slightly, he can’t control the way his heart felt like it would explode whenever he laughed. But what he can do is hide these feelings and urges that were blooming inside him.
And so far, he was trying to bury these feelings down as much as possible. But Nagisa was only making it worse.Nagisa was going to introduce him to his mother, considering how long they have been friends, and because of the fact that this was the peak of their “friendship”. Especially since he ghosted him during their second year.
The problem was that Nagisa was starting to feel differently about Karma, and it was tipping him off.By this point, he wasn’t introducing Karma to his mother as a friend—anybody could tell. Although, he tried hard to hide it. Why? Because it’d be wrong to love another boy. His mother would judge him to no end.
So all he can do is suffer while he tries to disguise his feelings with platonic friendship.
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Of Knives, Magic and Moons by wasabi1367
Fandoms: Twisted-Wonderland (Video Game), Assassination Classroom
30 Aug 2025
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Rin Hattori didn’t wish for this – certainly not. All he wanted to do was go to the studio, or maybe even the park to get some fresh air, and yet, here he was, whisked away to a different world that had magic.
At first, like a reasonable human being, he thought that perhaps, the universe had abandoned him in this fever dream. Was he so close to death that god had decided to tempt him? Surely death would be better than being stuck in a place like this, right?
Sadly, he ended up enrolling in Night Raven College.
It couldn't be helped, he supposed, forming a solid game plan. Do well enough not to fail in his academics, research a way home, avoid music like the plague, teach some goddamn English, and maybe do some art here and there while he was at it— hey, what could he say, this was another world after all. But most importantly, he resolved himself to try and keep it low-key.
In hindsight, Rin would’ve scoffed. What part of this is low-key? He wanted to scream.
(Oh, his friends back at home were going to absolutely lose it. What joy.)
Series
- Part 1 of fly me to the moon
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Pokémon Classroom by ShadowGengar28
Fandoms: Assassination Classroom, Pocket Monsters | Pokemon - All Media Types
26 Aug 2025
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A young trainer aspires to become the best Pokémon master, and his story is about to change when he meets the students of E Class. A special class that aspires to be the best trainers and students at Kunugigaoka School, and at the same time, they are destined to save the world. It's time to fight like assassins!
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Hero Classroom by Wendy_Noire
Fandoms: 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga), Assassination Classroom
17 Aug 2025
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When applying to high schools Karasuma told 3-E that the Department of Defense wanted them to apply to UA, so everyone did. Surprisingly for the dead end class of quirkless rejects, they all got into the classes they applied to.
They have a head start compared to their classmates, at least a year of playing the unwinnable game against the unkillable teacher had taught them the limits of their bodies. Then again, Karma and Nagisa were the first quirkless students in class 1-A in the entirety of UA's history, and that had a certain tone to it.
Nagisa's home life was also getting worse.