1 - 20 of 26 Works in Class 3-E (Assassination Classroom) & Midoriya Izuku
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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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Summary
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 -
Haunted by the Past, Driven by Light by petalveloria
Fandoms: 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga), Assassination Classroom
01 Aug 2025
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Before he ever dreamed of being a hero, Midoriya Izuku was trained to kill. For his third year of middle school, he transferred to Kunugigaoka Junior High's infamous Class 3-E. But behind its reputation lay the truth: Class 3-E was being trained to assassinate their teacher, Koro-sensei.
After their misson succeeded mid-December, the class graduated. They finished the rest of the school year taking online courses, scattered and grieving. They took a vow, never to discuss the purpose of their class to anyone. Not with heroes. Not with their families. It would all stay between whoever knew the truth.
Now, as a UA High student, Midoriya Izuku must take a different path, as a hero-in-training and the ninth holder of One for All. But Class 3-E is still active, the missions continue all behind the scenes. Some of his former classmates are transferring to UA, joining the Support Course and General Education.
And now, new villans are rising, all guided by All For One's hands. Izuku most confront the truth.
He may be a hero in training, but some battles require the skill that only an assasin can deliver.
He was trained to kill. Chosen to save. Can he do both, or will he fall under the pressure?
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The Reaper: What if Izuku was in the Assassination Classroom by Rae_of_Frost
Fandoms: 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga), Assassination Classroom
05 Jul 2025
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Summary
The misadventures of Izuku Midoriya and his band of outcast weirdos. From spending the last year of middle school plotting the assassination of their teacher to pranking their classmates during their first year at UA High.
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Achilles, Assassin and Hero by Lunar_Heartwood
Fandoms: 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga), Assassination Classroom
03 Jul 2025
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Summary
Korosensei is dead. It's now time to move on.
Izuku Midoriya was a student in Korosensei's class, a foster kid that had been transferred in due to his sharp intellect. Now, after graduating into UA high school, he finds a foster home with his homeroom and English teachers as he begins his journey to becoming the greatest assassin-turned-hero this world will ever see. -
Recognising Death. by purtiniii
Fandoms: Assassination Classroom, 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga)
22 May 2025
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'The Reaper'
Now that's a name that Izuku recognised.
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There's Murder in His Past (Can an Assassin Be a Hero?) by nameless_571
Fandoms: 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga), Assassination Classroom
05 Apr 2025
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Summary
Midoriya Izuku spent his last year of middle school in Kunugigaoka’s stigmatized class 3-E, meticulously trained to be one of the country’s top assassins. For a full year, he and his classmates were taught everything there was to know on how to shoot, stab and kill.
And they succeeded. Korosensei, the Tentacle who blew up the moon, was dead— killed by his own students’ hands.
But now that everything was over, could Izuku follow his dream and become a hero? What would his experiences change in his trajectory?
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To Be a Hero, He Must First Be a Killer by ImNotHuman
Fandoms: 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia, Assassination Classroom
29 Mar 2025
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Summary
After mama Midoryia finds out that Izuku was being bullied she transferred him to Kunugigaoka Junior High, where she thought he would be safe. Boy was she wrong.
Follow Izuku's last year in Junior high, where he and his classmates are tasked with killing their teacher, who so happens to be the one who blew up the moon!
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Keep Moving by NerdofSpades
Fandoms: Assassination Classroom, 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia
02 Jan 2025
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Summary
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 hide state secrets.
Series
- Part 20 of Open Doors
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Embers Of Criminality by AlbinoRatMomma, SavedData
Fandoms: Assassination Classroom, 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia
12 Aug 2024
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Summary
For the past nine years life has continued moving forward with a few ups and downs.
Then the moon explodes resulting in a series of events that changes everyone's life forever.
Series
- Part 2 of Inferno Of Lawlessness
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Rest in Peace, Assassination Classroom. by lifeequalssphere
Fandoms: Assassination Classroom, 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga)
19 Jul 2024
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Summary
The Annual Funeral of their past.
Series
- Part 7 of An Assassin for a Hero? Unheard of!
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Stereotypes by TabiCats
Fandoms: Assassination Classroom, 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia
18 Jul 2024
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Summary
*in the process of being rewritten* *more tags to be added*
Karasuma sat down across from her and looked her in the eyes with newfound respect, he admired that Inko seemed to truly care about her son and wasn’t about to trust a stranger that he posed no threat to him even if he attempted to alleviate her worries.
A far cry from the previous pair of so-called parents he met before visiting her, the moment they understood why he has there, they just about ran to hand him their kid, not caring to hear the rest of the details, not caring at all, they just wanted the boy gone. disgusting.
‘’Is there no other way?’’ Inko asked.
‘’Please, believe me when I say it’s for his own safety.’’ Karasuma said softly while handing her a handkerchief.
Inko stared at it for a good minute before she took it with shaky hands. She wiped away her tears and looked at him with determination. She won’t lose her son, she promised to be his anchor. And so she will be.
‘’I agree.’’
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What if the assassination classroom a.k.a. The End Class existed in the same world as U.A. High School? and they are breaking all the stereotypes. -
Bye Bye to the world I know ( it's time to try something new ) by Crypticsunshine
Fandoms: Assassination Classroom, 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga)
04 Jul 2024
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Summary
This is a crossover fanfic between the assassination classroom and MHA universe
Also the real summary for this fanfic Is located in the beginning authors notes due to ao3 saying my summary was too long but I liked it too much too give it up so I just put it there
Series
- Part 1 of Lessons learned across the stars
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Rejects by pokenaruto58
Fandoms: 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia, Assassination Classroom
11 Jun 2024
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Summary
Midoriya Izumi was more than happy to change schools.
She was a little less happy about being asked to kill her new teacher.
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Potential by KillianTaylor777
Fandoms: 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga), Assassination Classroom
04 Feb 2024
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Summary
After a slew of kidnapping, villain attacks, break ins, and a murder, Izuku and Katsuki need a new school. They happen to run into Class 3-E on their trip to Kyoto and the adults involved realize this is a great idea, actually.
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How To Be An Assassin by Majuki_296
Fandoms: Assassination Classroom, 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga)
05 Nov 2023
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Summary
The Assassination Classroom Arc of my series "Mission: Assassin, Hero, Cryptid"
The series' first part "The Beginning" contains the prologueIzuka and Hitoshi start their last year of middle school.
With a rather unorthodox assignment: kill your homeroom teacher.
Between a scary, manipulative and controlling Board Chairman, assassination attempts on their teacher, training how to assassinate said teacher and the usual preparations for entering high school, Izuka and Hitoshi give their best.
If they need to be an assassin first, before becoming a hero, then so be it.Luckily, they're not alone.
Friends, teachers and new acquaintances support, help and follow them.Series
- Part 2 of Mission: Assassin, Hero, Cryptid
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The Assassin in Our Midst by SeaSkate
Fandoms: Assassination Classroom, 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga)
21 Oct 2023
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Summary
Class 1 A take a trip up the mountain for some training in quirkless combat. Will Izuku's, or should I say Nagisa's secrets remain secret?
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She Was My Old English Teacher by YeahImBored1
Fandoms: Assassination Classroom, 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga)
05 Aug 2023
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Summary
Izuku didn't know where everything had gone wrong. He got into his dream school, has a quirk now, he stopped the earth from exploding, sent his classmates into space, became an assassin, and killed his middle school teacher.
Yeah it was probably those last couple of ones.
But other then that he likes to think he's a good kid, at least good enough to not have to deal with whatever hell the universe decided to throw at him today.
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Reminisce The Past by Violet_Ybrehl07
Fandoms: 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia, Assassination Classroom
24 May 2023
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Summary
(Learn The Lesson Book 2)
After the UA Civil War, the Heroic Class now learned their lesson. Now they will learn the past of Villain Team in their most important place in their heart and realize how lucky they are since birth.
Series
- Part 2 of MHA X AC Crossover
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Never Will Be Normal by Solitude_Aurora
Fandoms: 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia, Assassination Classroom
30 Oct 2022
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Summary
- no main ships -
When his life goes upside down after All Might tells him he can't be a pro hero, Izuku Midoriya goes through the hardships of watching his old friend get attacked and ends up in a different universe through accidental quirk usage. He is completely confused as the world he ends up in replicates his old world, with the exception of their being no quirks... what happens when there is only one person who could take you back home, but they are the same person you're set upon to kill through orders?
This is the story of Izuku Midoriya and his adventures through a new world.
(Summary: Izuku Midoriya gets reality warped into another universe, where Koro-Sensei is the only person... who he thinks, can get him home. Whilst the hunt to find Izuku Midoriya, back in his world, starts.)
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Learn The Lesson (MHA x AC) by Violet_Ybrehl07
Fandoms: 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia, Assassination Classroom
01 Sep 2022
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Summary
Class 3-A had been in constant villain and succeed to survive. Dubbed as "Greatest Heroes" after the war, they become Arrogant and cocky.
This leads for Nezu to ask for a help to his student, Izuku Midoriya a Gen Ed Students, an Assassin, and a former member of AC Project.
A UA civil war was created to fixed their behaviour.
Series
- Part 1 of MHA X AC Crossover