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  1. 1

    Coffee machine go boom and people find the killer by

    Fandom: Assassination Classroom, 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga)

    01 Nov 2025

    Words:
    2,406
    Works:
    2
    Bookmarks:
    1

  2. 73

    abbey by

    Fandoms: Assassination Classroom  

    13 Mar 2025

    Tags
    Summary

    “If you’d killed him, it would mean something", Karma says. “You didn’t kill him, for whatever reason, and that still means something. Of course not everything means something else. I don’t know what it means, either.” He’s quiet for a moment. Then, “That’s up to you to figure out. You didn’t kill him. You’ll have to live with that. Same as you would if you had.”

    “Would you think of me differently?” Nagisa asks. His voice sounds flat to his own ears. “If I had?”

    “Would you?” Karma asks in turn.

    Nagisa doesn’t respond.

    Or, a study in smallness.

    Language:
    English
    Words:
    15,196
    Chapters:
    1/1
    Comments:
    46
    Kudos:
    252
    Bookmarks:
    73
    Hits:
    2,494

  3. *

    Raven by

    Fandoms: Assassination Classroom  

    15 Feb 2024

    Tags
    Summary

    After dying I didn't expect anything. Maybe even hell, but not a new life. I hoped to enjoy that life to the fullest and not to leave too many regrets behind. Well, I guess killing my own teacher, who planned to destroy the earth in one year, with my best friend was kind of nice too. SI!OC

    Language:
    English
    Words:
    170,835
    Chapters:
    38/?
    Collections:
    6
    Comments:
    110
    Kudos:
    797
    Bookmarks:
    275
    Hits:
    26,443

  4. *

    Senbazuru by for MixterGlacia

    Fandoms: Assassination Classroom, Ansatsu Kyōshitsu  

    09 Jun 2025

    Tags
    Summary

    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 brilliance.
    If it weren't for how straight laced and intense Mr Karasuma had been you would have thought you were being hazed...
    That had to be it, right?

    You'd read over the file, you'd seen the photos, you'd signed a non disclosure agreement and here, days later, you were trying to work out just what you'd gotten yourself into.

    Reader Is: Gender neutral, pacifist, not from Japan, Reader has a backstory, 'Reader' is used instead of Y/N
    Explicit scenes are skippable and gender neutral
    And yes, most of the locations in this fic are real places

    This fic is now also a podfic!
    You can listen to it here!.

    Series
    Language:
    English
    Words:
    815,218
    Chapters:
    233/?
    Collections:
    1
    Comments:
    2,910
    Kudos:
    4,438
    Bookmarks:
    460
    Hits:
    216,942

  5. 70

    Haunted by the Past, Driven by Light by

    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

    Tags
    Summary

    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?

    Language:
    English
    Words:
    23,471
    Chapters:
    5/?
    Comments:
    37
    Kudos:
    217
    Bookmarks:
    70
    Hits:
    4,172

  6. *

    A Contract Between Killers by

    Fandoms: Assassination Classroom  

    27 Mar 2020

    Tags
    Summary

    Nagisa is the best assassin in the world, but there’s one politician that he just can’t seem to kill.

    Language:
    English
    Words:
    9,331
    Chapters:
    3/3
    Collections:
    2
    Comments:
    105
    Kudos:
    2,402
    Bookmarks:
    323
    Hits:
    25,142

  7. *

    in memory of the ones that live again. by ,

    Fandom: Akatsuki no Yona | Yona of the Dawn, Assassination Classroom, Fairy Tail, Katekyou Hitman Reborn!, Kuroko no Basuke | Kuroko's Basketball, Magi: The Labyrinth of Magic, Naruto, One Piece, 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia, 食戟のソーマ | Food Wars! Shokugeki no Soma, 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime), 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Manga), 魔入りました! 入間くん | Mairimashita! Iruma-kun | Welcome to Demon School! Iruma-kun (Anime), 魔入りました! 入間くん | Mairimashita! Iruma-kun | Welcome to Demon School! Iruma-kun (Manga)

    16 Sep 2025

    Summary

    a series of OC reincarnation fanfiction.

    Words:
    714,714
    Works:
    13
    Bookmarks:
    607

  8. 9

    Karma's Trick by

    Fandoms: Assassination Classroom  

    26 Aug 2025

    Tags
    Summary

    The Main Campus Students thought it was a great idea to gift Class 3E a hamster to 'help' them learn to be better students. Nagisa thinks the hamster is very cute; Karma is pointedly not jealous of the hamster stealing Nagisa's attention...

    Language:
    English
    Words:
    1,208
    Chapters:
    1/1
    Comments:
    2
    Kudos:
    118
    Bookmarks:
    9
    Hits:
    910

  9. 2

    one single answer, and it changes everything by

    Fandoms: Assassination Classroom  

    15 Mar 2025

    Tags
    Summary

    but he knows better than that and he knows that the way she stares at him, teary and hiding the shake in her voice, in her hands, in her chest that she— is willing to do everything she had just said.

    — an aguri x koro-sensei fanfic where everything started from here and moves forward

    Series
    Language:
    English
    Words:
    749
    Chapters:
    1/1
    Comments:
    2
    Kudos:
    12
    Bookmarks:
    2
    Hits:
    117

  10. 47

    The Merge by

    Fandoms: 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia, 呪術廻戦 | Jujutsu Kaisen (Anime), Assassination Classroom  

    13 Sep 2025

    Tags
    Summary

    The Board of Education proposed a merge in the top three school in Japan. Yuuei High, of the top pro hero’s in the lime light. Kunugigaoka High, the school with the most underground “Hero’s” (more like assassins). And lastly, Jujutsu High, who works closely with otherworldly activities. What happens when the reason for the merge comes to light, and how will the student at all three schools manage to save a world that could be in danger?

    (Basically I wanted to right a story about the three school’s merging and throw in some SubVerse undertones)

    Language:
    English
    Words:
    20,648
    Chapters:
    6/?
    Comments:
    30
    Kudos:
    229
    Bookmarks:
    47
    Hits:
    5,599

  11. *

    In the Mood For Murder by

    Fandoms: Assassination Classroom, Dr. STONE (Manga), Dr. STONE (Anime)  

    27 Dec 2024

    Tags
    Summary

    A test rocket launch gone wrong, Senku ended up on the wrong side of the law. Seeing potential in him as a Class 3-E Assassin, Karasuma gave him a deal: Come to Kunugigaoka. Try and kill Koro-sensei. Your criminal record is erased.

    He agreed on one condition: Yuzuriha got a chance to transfer to Kunugigaoka too. She wanted a chance to use the prestigious academy's Art Club's resources.

    Yuzuriha sighed dreamily, “Wow… the two of us, at Kunugigaoka! Are you sure you don’t wanna come, Taiju?”

    Taiju shook his head, “No offense, but I don’t really like the look of some of the students?? They give me the heebie jeebies. Let’s just hang out after school!”

    “Really? They seem friendly enough to me.” Yuzuriha considered, tapping her chin.

    It was only later did she learn that Taiju was spot on. Except it wasn’t just the students.
    The entire school was a hell dimension.

    Language:
    English
    Words:
    10,319
    Chapters:
    1/1
    Comments:
    26
    Kudos:
    451
    Bookmarks:
    117
    Hits:
    2,112

  12. 30

    Nagisa's Students by

    Fandoms: Assassination Classroom  

    26 Mar 2025

    Tags
    Summary

    A group of Nagisa's students end up learning more about their teacher than their intended study plan.

    Language:
    English
    Words:
    2,173
    Chapters:
    1/1
    Comments:
    4
    Kudos:
    232
    Bookmarks:
    30
    Hits:
    1,213

  13. 4

    What lies in the deep sea. by

    Fandoms: Assassination Classroom, Slavic Mythology & Folklore  

    27 Jan 2025

    Tags
    Summary

    Karma has an odd request for his teacher, he needs help but he does not want to explain why. Karasuma is very confused but after all Karma is his student so the man will do anything to keep his students safe.

    Language:
    English
    Words:
    2,831
    Chapters:
    1/1
    Comments:
    2
    Kudos:
    64
    Bookmarks:
    4
    Hits:
    817

  14. *

    The Mafia Teacher by

    Fandoms: Katekyou Hitman Reborn!, Assassination Classroom  

    29 Dec 2018

    Tags
    Summary

    When you have a color changing octopus nicknamed Korosensei, government agent Karasuma, and a assassin named Irina Jelavich, all teaching E class, who else could you add? An Italian Mafia boss, anyone? Enter Tsunayoshi Sawada, Vongola Decimo.
    No slash.

    Language:
    English
    Words:
    38,505
    Chapters:
    19/?
    Comments:
    74
    Kudos:
    880
    Bookmarks:
    200
    Hits:
    18,428

  15. 6

    when the morning comes by

    Fandoms: Assassination Classroom  

    04 Sep 2025

    Tags
    Summary

    It's been two years since Nagoya, Japan has been taken over by the undead, leaving Nagisa, Karma, and Rio to take refuge in an abandoned supermarket with nothing to look forward to but another day. When food becomes scarce and tensions raise with starvation, a choice has to be made: leave or die.

    There's a lot to consider. Who knows what horror awaits beyond those doors? And what is there to do when the past is just as haunting as the future?

    Language:
    English
    Words:
    62,387
    Chapters:
    14/14
    Comments:
    22
    Kudos:
    38
    Bookmarks:
    6
    Hits:
    576

  16. 39

    Healing Time by

    Fandom: Assassination Classroom

    21 Dec 2021

    Words:
    18,755
    Works:
    5
    Bookmarks:
    39

  17. 41

    Under The Moonlight by

    Fandoms: Assassination Classroom  

    17 Jul 2021

    Tags
    Summary

    Nagisa wasn’t sure what his plans for the rest of the day were going to be, but that was quickly changed when he tagged along with Karma, who managed to convince their teacher to let them fly with him to Hawaii for a movie.

    [ Season 1 episode 10 when Koro-sensei flies Karma and Nagisa to Hawaii to watch Sonic Ninja ]

    Language:
    English
    Words:
    6,024
    Chapters:
    1/1
    Comments:
    13
    Kudos:
    426
    Bookmarks:
    41
    Hits:
    2,992

  18. *

    Discography by

    Fandoms: Assassination Classroom  

    03 Jul 2020

    Tags
    Summary

    So Gakuho sold his soul to a demon. He figured he'd always do it. He had unrealistic ambitions and twisted dreams and everyone said he had probably made a deal with the devil to get to where he is in life.

    Ironically enough, that was all him. He worked his way up by his own merit. The occult part came later.

    Gakuho sells his soul to a demon. Gakushuu IS that demon.

    Series
    Language:
    English
    Words:
    12,223
    Chapters:
    3/3
    Collections:
    1
    Comments:
    162
    Kudos:
    657
    Bookmarks:
    150
    Hits:
    4,628

  19. *

    Hero Classroom by

    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

    Tags
    Summary

    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.

    Language:
    English
    Words:
    35,762
    Chapters:
    18/?
    Comments:
    372
    Kudos:
    1,134
    Bookmarks:
    178
    Hits:
    20,697

  20. 40

    MHA/A.C. Crossover by

    Fandom: Assassination Classroom, 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia

    02 Feb 2022

    Words:
    55,666
    Works:
    2
    Bookmarks:
    40

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