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  1. *

    Our Assistant Teacher is Insane! [ REWRITE ] by

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

    21 Sep 2025

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    Summary

    The girl shot up so quickly her chair squeaked against the floor. “Nagisa-sensei!” she beamed, eyes shining with unfiltered excitement. “What’s your quirk?”

    The room seemed to lean in all at once, a ripple of anticipation spreading through the students. Even the green-haired boy in the front row — who already had a notebook open — was practically vibrating, pen poised like he was about to record every word.

    For a moment, Nagisa only smiled back at them, soft, calm, the kind of expression that gave nothing away and yet somehow eased the air in the room. His eyes swept lightly across the expectant faces, catching sparks of excitement, curiosity, and even a little awe. Then, with the same steady composure he had carried all morning, he answered:

    “…Why, I’m Quirkless.”

    or

    After Paradise High School, Karasuma contacts Nagisa and sends him on a mission to UA. The goal? Monitor and teach combat to the new upcoming hero students in Class 1-A. So, Nagisa becomes Aizawa’s assistant teacher.

    Weekly Updates!!!

    Series
    Language:
    English
    Words:
    29,997
    Chapters:
    8/?
    Comments:
    125
    Kudos:
    463
    Bookmarks:
    107
    Hits:
    6,097

  2. 54

    When you send the assassin who’s only ever killed one person on an intelligence mission. by

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

    17 Oct 2025

    Tags
    Summary

    Nagisa Shiota gets sent to UA by the ministry of defense in search for a potential traitor/threat.

     

    Posted…(7/22/25)
    Updated…(10/17/25)
    !EXTREMELY SLOW UPDATES!

    Language:
    English
    Words:
    7,672
    Chapters:
    2/12
    Comments:
    67
    Kudos:
    306
    Bookmarks:
    54
    Hits:
    3,958

  3. 76

    A different perspective by

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

    21 Oct 2025

    Tags
    Summary

    A challenge from thatonereader12345: They loved A different sensei and asked for another my hero academia/Assasination Classroom with the idea that somehow Izuku Midoriya wakes up as Nagisa Shiota, and then wakes back up as himself, with all of Nagisa's hang-ups, skills, and attitude. So here you are Thatonereader12345: Izuku thinks the worst the idiots in his class can do is call him names and beat up on him. Until Katsuki takes issue with Izuku getting stronger and gets one of the extras that hang around him to use their quirk on Izuku. That quirk connects the person to their universal counterpart. Izuku's is Nagisa Shiota.

    Language:
    English
    Words:
    13,001
    Chapters:
    9/?
    Comments:
    36
    Kudos:
    200
    Bookmarks:
    76
    Hits:
    5,055

  4. 4

    The Family of Akabane by

    Fandoms: Assassination Classroom  

    08 Feb 2025

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    Summary

    In the Akabane household, there's no such a thing as ordinary. With Karma as the father and Manami as the mother, their children were bound to grow up in a family unlike any other. In the E-3 graduation advice book, two different words were written for them in future advice page about building a family—"Comfortable" for Karma and "Warm" for Manami. One way or another, they succeeded. And that was enough.

    Family fluff one-shot.

    Language:
    English
    Words:
    1,967
    Chapters:
    1/1
    Comments:
    11
    Kudos:
    85
    Bookmarks:
    4
    Hits:
    714

  5. 3

    Class E: Hero Society by

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

    25 Oct 2025

    Tags
    Summary

    One ordinary afternoon, Class E vanishes.
    Koro-sensei, Karasuma, Irina, and their students wake up in a world where powers are reality, and heroes walk the streets.

    Out of place, outmatched, and under the watchful eyes of Japan’s top heroes, the students must navigate a society that is both fascinating and dangerous.
    One student is chosen to enter U.A. High — a school of heroes, where every move is a test, and every action has a consequence.

    But the more they explore this world, the clearer it becomes:
    their arrival was no accident. Something — or someone — brought them here.
    And what waits for them may change not just their lives, but the fate of two worlds.

    Language:
    English
    Words:
    47,442
    Chapters:
    16/?
    Comments:
    30
    Kudos:
    25
    Bookmarks:
    3
    Hits:
    506

  6. *

    the things a teacher sees by

    Fandoms: Assassination Classroom  

    31 Jan 2019

    Tags
    Summary

    Nagisa and Akari catch up a little over lunch.

    Meanwhile, three of his new students listen in on the conversation.

    Language:
    English
    Words:
    2,186
    Chapters:
    1/1
    Comments:
    16
    Kudos:
    1,315
    Bookmarks:
    158
    Hits:
    6,617

  7. *

    In the Mood For Murder by

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

    27 Dec 2024

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    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:
    25
    Kudos:
    445
    Bookmarks:
    116
    Hits:
    2,055

  8. *

    School watches Assassination Classroom by

    Fandoms: Assassination Classroom  

    28 Apr 2021

    Tags
    Summary

    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 MASSIVE RECONSTRUCTION WITH TRANSCRIPTS, TUNE BACK IN ONCE I FINISH EDIITNG THEM or read a copy of my story on Tumblr*

    Series
    Language:
    English
    Words:
    345,920
    Chapters:
    54/54
    Collections:
    41
    Comments:
    690
    Kudos:
    5,678
    Bookmarks:
    1,825
    Hits:
    490,307

  9. *

    Accidents, Accidents by

    Fandoms: Assassination Classroom  

    11 Jan 2022

    Tags
    Summary


    Gakuhou stabs his dinner angrily, his lips drawn into a thin line. Gakushuu counts down the seconds in his head as he chews on his food.

    5, 4, 3, 2, 1-

    “Akabane-kun,” Gakuhou glowers, “Out of every student, why Akabane-kun?”

    “Because he’s confident, quick witted, a fun person to banter with, is surprisingly sweet when he wants to be-

    or Gakushuu and Karma started dating a little after final exams. This is how everyone else finds out.

    Language:
    English
    Words:
    1,341
    Chapters:
    2/2
    Comments:
    11
    Kudos:
    1,063
    Bookmarks:
    140
    Hits:
    9,934

  10. 62

    Mission Accomplished by

    Fandoms: Assassination Classroom  

    16 Mar 2021

    Tags
    Summary

    Gakuhuo had walked back into his office after a long and tiring meeting with the government about the octopus situation to find his son twirling around in his swivel chair.

    Aka: Gakushuu is being a chaotic little brat.

    Language:
    English
    Words:
    816
    Chapters:
    1/1
    Comments:
    20
    Kudos:
    846
    Bookmarks:
    62
    Hits:
    5,760

  11. *

    Because nothing says "Fuck you dad" like dating Karma Akabane. by for LoserxLoser

    Fandoms: Assassination Classroom  

    01 Dec 2020

    Tags
    Summary

    "You take pleasure in pissing people off." "Is that A trick question? or even a question?" "Come make out with me in front of my father's office." "You hate me." "He hates you more."

    Language:
    English
    Words:
    3,442
    Chapters:
    1/1
    Comments:
    70
    Kudos:
    2,005
    Bookmarks:
    270
    Hits:
    11,271

  12. *

    Future by

    Fandoms: Assassination Classroom  

    19 Jul 2020

    Tags
    Summary

    So Gakuhou can see the future. It's not as great as it sounds.

    Written for Karushuu Week on tumblr! (Prompt: Future)

    Language:
    English
    Words:
    796
    Chapters:
    1/1
    Collections:
    2
    Comments:
    70
    Kudos:
    1,156
    Bookmarks:
    137
    Hits:
    6,497

  13. 70

    Watching their Anime | Season 1 by

    Fandoms: 呪術廻戦 | Jujutsu Kaisen (Anime), 文豪ストレイドッグス | Bungou Stray Dogs, Hunter X Hunter, 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime), Kuroshitsuji | Black Butler, SPY x FAMILY (Anime), 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga), 地縛少年花子くん | Jibaku Shounen Hanako-kun | Toilet-bound Hanako-kun (Anime), Black Clover - Tabata Yuki (Anime & Manga), Shingeki no Kyojin | Attack on Titan, ワンパンマン | One-Punch Man, Death Note (Anime & Manga), Assassination Classroom, Haikyuu!!, 斉木楠雄のΨ難 | Saiki Kusuo no Sai-nan | The Disastrous Life of Saiki K., Blue Lock (Anime), 東京卍リベンジャーズ | Tokyo Revengers (Anime), Chainsaw Man (Anime), Ouran High School Host Club - All Media Types, 推しの子 | Oshi no Ko (Anime), Fruits Basket (Anime 2019), Mashle: Magic and Muscles (Anime), SK8 the Infinity (Anime), 魔入りました! 入間くん | Mairimashita! Iruma-kun | Welcome to Demon School! Iruma-kun (Anime), Buddy Daddies (Anime), Avatar: The Last Airbender (Cartoon 2005), One Piece (Anime & Manga), Alien Stage (Web Series), 薬屋のひとりごと | Kusuriya no Hitorigoto | The Apothecary Diaries (Anime), ダンジョン飯 | Dungeon Meshi | Delicious in Dungeon, モブサイコ100 | Mob Psycho 100  

    12 Oct 2025

    Tags
    Summary

    In which 49 different anime verses watch other characters perspectives in 24 minutes or more. Or rather, when a pair of all-powerful twins accidentally bend the laws of nature and send anime characters to watch themselves.

    Language:
    English
    Words:
    203,660
    Chapters:
    16/?
    Comments:
    26
    Kudos:
    145
    Bookmarks:
    70
    Hits:
    6,610

  14. 15

    This Game we call "Love" by

    Fandoms: Assassination Classroom  

    12 Oct 2025

    Tags
    Summary

    With that final push, Nagisa lifted his head and looked directly at Karma, avoiding his intense gaze. He forced himself to speak the question that’s been burning on his mind since that morning. He forced himself to not think about the worst that could happen, and only on the best possible outcome. Anything to get out of the new reality that he was painstakingly living through.

    “Karma-kun, I need you to be my fake boyfriend!”

    As soon as he spoke, he swore he heard a pin drop.

    Language:
    English
    Words:
    15,220
    Chapters:
    4/?
    Comments:
    43
    Kudos:
    111
    Bookmarks:
    15
    Hits:
    1,054

  15. 3

    crossover works by

    Fandom: Assassination Classroom, Code Geass, Dangan Ronpa - All Media Types, Dangan Ronpa 3: The End of 希望ヶ峰学園 | The End of Kibougamine Gakuen | End of Hope's Peak High School, Dangan Ronpa Another Episode: Ultra Despair Girls, Dangan Ronpa Series, Dangan Ronpa Zero, Dangan Ronpa: Trigger Happy Havoc, Danny Phantom, DCU, DCU (Comics), Deltarune (Video Game), Fruits Basket, Gravity Falls, Hunger Games Trilogy - Suzanne Collins, Kagerou Project, Knives Out (Movies), Mahou Shoujo Madoka Magika | Puella Magi Madoka Magica, Mekakucity Actors, MILGRAM (Music Videos), Miraculous Ladybug, My Little Pony Generation 4: Friendship Is Magic (Cartoon 2010), Mystic Messenger (Video Game), New Dangan Ronpa V3: Everyone's New Semester of Killing, Ouran High School Host Club - All Media Types, Over the Garden Wall (Cartoon & Comics), Parties are For Losers - Ferry (Songs), Persona 5, Persona Series, Puss in Boots (DreamWorks Movies), Re:ゼロから始める異世界生活 | Re:Zero Starting Life in Another World (Anime), Steven Universe (Cartoon), Super Dangan Ronpa 2, Super Dangan Ronpa 2.5, Tangled (2010), The Owl House (Cartoon), Undertale (Video Game), 乙女ゲームの破滅フラグしかない悪役令嬢に転生してしまった… - 山口悟 | My Next Life as a Villainess - Yamaguchi Satoru (Light Novels), 乙女ゲームの破滅フラグしかない悪役令嬢に転生してしまった… | My Next Life as a Villainess (Anime), 乙女ゲームの破滅フラグしかない悪役令嬢に転生してしまった… | My Next Life as a Villainess (Manga), 乙女ゲームの破滅フラグしかない悪役令嬢に転生してしまった… | My Next Life as a Villainess (Visual Novel), 人渣反派自救系统 - 墨香铜臭 | The Scum Villain's Self-Saving System - Mòxiāng Tóngxiù, 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia, 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga), 天官赐福 - 墨香铜臭 | Tiān Guān Cì Fú - Mòxiāng Tóngxiù, 天官赐福 | Heaven Official's Blessing (Cartoon), 推しの子 | Oshi no Ko (Anime), 推しの子 | Oshi no Ko (Manga), 文豪ストレイドッグス | Bungou Stray Dogs, 琴浦さん | Kotoura-san, 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), 魔道祖师 - 墨香铜臭 | Módào Zǔshī - Mòxiāng Tóngxiù

    13 Oct 2025

    Words:
    338,470
    Works:
    139
    Bookmarks:
    3

  16. *

    Retrouvailles by

    Fandoms: Assassination Classroom  

    17 Jun 2025

    Tags
    Summary

    Nagisa somehow traveled back in time, a year before Korosensei became his teacher. After unspeakable events took place in his original timeline, Nagisa can say he's happy about seeing his friends alive and well, after a very long time. But with that happiness comes the pain of not being able to connect with them as he did before.

    A loophole he's found, however, was becoming a teacher at his old junior high. After changing his look and overall personality, Shiota Nagisa now goes by Yamada Naho.

    Series
    Language:
    English
    Words:
    157,371
    Chapters:
    46/60
    Collections:
    4
    Comments:
    906
    Kudos:
    3,174
    Bookmarks:
    753
    Hits:
    88,286

  17. *

    Blood on Snow by

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

    13 Jun 2025

    Tags
    Summary

    “Come on, you would be the perfect candidate for our cause!” Shigaraki finished his sales pitch and gestured to the other villains in the bar.

    Bakugou didn’t buy his bullshit, his goal was to be the number one hero, not join some little villain band that felt sorry for themselves. But when he turned his eyes to look at Nagisa he felt himself freeze.

    The kid looked like he was considering it.

    Language:
    English
    Words:
    20,367
    Chapters:
    5/?
    Comments:
    79
    Kudos:
    683
    Bookmarks:
    155
    Hits:
    8,634

  18. *

    Tribulation by

    Fandoms: Assassination Classroom  

    25 Oct 2020

    Tags
    Summary

    Gakushuu had always been different; he had known that from the very start. He went through things that most 14 year olds would never dream of going through and handled things in such a manner that one would find it absurd and self destructive. Perhaps that's what he was; self destructive. There was no denying it.

    Language:
    English
    Words:
    3,206
    Chapters:
    1/1
    Collections:
    1
    Comments:
    17
    Kudos:
    870
    Bookmarks:
    128
    Hits:
    10,018

  19. 67

    Will You Love Me Even Then? by

    Fandoms: Assassination Classroom  

    08 Apr 2015

    Tags
    Summary

    Getting his hair cut was what Nagisa wanted for a long time, but what if it changed things?

    Series
    Language:
    English
    Words:
    1,326
    Chapters:
    1/1
    Comments:
    16
    Kudos:
    850
    Bookmarks:
    67
    Hits:
    9,527

  20. 16

    notations by

    Fandoms: Assassination Classroom  

    10 Apr 2015

    Tags
    Summary

    his anticipations, dispositions and questions are related to the resident trickster that plays with connotations and denotations.

    Language:
    English
    Words:
    2,446
    Chapters:
    1/1
    Comments:
    6
    Kudos:
    259
    Bookmarks:
    16
    Hits:
    3,157

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