Once_Was



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  1. Public Bookmark *

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    Midoriya Izuku has been set back further than any previous point in his life. If All-Might says he can't be a Hero, what chance does he really have? He has to give that up and move forward realistically. No matter the twist of the knife...
    An extensive knowledge of Heroes and their world has its uses elsewhere. However, can he truly abandon that want, desire, need to be a Hero? Can he deny himself that? Or will he give to his compulsion?

    Language:
    English
    Words:
    326,677
    Chapters:
    82/?
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    15 Mar 2026

  2. Public Bookmark 36

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    When Izuku Midoriya turns four, his Quirk manifests in his sleep. Erasing nine city blocks from the map. 2,267 people die in seconds, leaving him alone in the ashes.

    He doesn't remember any of it.

    Locked in a containment cell beneath U.A., monitored by machines that never stop watching, Izuku grows up as both the most dangerous child in Japan and its most closely guarded secret. The disaster he never chose ignites a wave of hatred against the visibly different and in a world that now fears what Quirks can become, being born wrong is enough to make you a target.

    Years later, a boy carrying the weight of a star meets a girl who's spent her whole life being told she's a monster. Neither of them is ready. But the world doesn't wait for you to be ready.

    An AU where the Quirk Singularity Theory isn't a warning. It's already here.

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    English
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    53,674
    Chapters:
    8/?
    Comments:
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    07 Mar 2026

  3. Public Bookmark *

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    Several weeks ago, the Tojo Clan and Omi Alliance, the two greatest yakuza organizations, finally closed their chapters in history. A victory for Hero Society, but the taste is bitter for many of its former members, save those who enrolled in Tojomi Security. Goro Majima's felt aimless ever since.

    That all changes at lunch one day, when his cousin Higari raised the idea of teaching at a Hero School. Just to humor him, Goro makes the attempt. A Quirkless ex-yakuza's got little chance at working there, but why not? Surprisingly, they hire him as a TA for Class 1-A.

    The kids are a multi-faceted bunch, but they're nothing an ex-Patriarch of the Majima Family can't handle!

    Unfortunately for the kids, a new TA isn't the only unusual thing they'll be seeing this year. Rumblings gather in the shadows. But when the shadows gather, it's sometimes good to have a Demon on your side.

    Majima's no stranger to conspiracies, but when past figures from his past life start creeping into the world of Heroics, the ripples only become greater. Doesn't matter to him, though! Come hell or high water, he'll be there for the kids.

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    59/?
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    04 Mar 2026

  4. Public Bookmark 35

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    Aizawa is a simple man. He likes coffee, never gets enough sleep and loves the family he's created with his husband. If only he didn't have to waste his time searching for the school traitor. Things start getting interesting when he notices discrepancies in one student's middle school files. It's up to him to protect his students, his family and his suspected traitor too.

    Things are going better for Izuku until he begins to notice strange behaviors among his class. His suspicions are only confirmed when he receives a note from the class' eccentric exchange student and one of Izuku's dorm neighbors. Now it's up to him to find the real traitor and prove his innocence before the noose of Aizawa's investigation tightens around his throat. He's not alone though.

    "No matter what, I believe you."

    Endgame DekuJiro, Ao3 just doesn't let me put the tags in order.

    First part of the series is only a concept chapter, not necessary for reading this story. Feel free to if you wanna see how the story has changed though!

    This is my first fic in like 10 years, so please be kind. Always looking for advice though. Currently updating every 2 weeks.

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    English
    Words:
    30,726
    Chapters:
    14/?
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    04 Mar 2026

  5. Public Bookmark *

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    After Izuku is transferred to another middle school, he meets a cool dude named Jiro. Jiro is a pretty common boy's name, so he doesn't question it when he finds out that's Jiro-kun's family name too. Maybe his parents are just funny like that?

    Series
    Language:
    English
    Words:
    28,824
    Chapters:
    10/10
    Comments:
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    Kudos:
    349
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    117
    Hits:
    10,983

    04 Mar 2026