1 - 20 of 111 Works in De-Aging Quirk (My Hero Academia)

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  1. Tags
    Summary

    Yoichi gets de-aged into a five-year-old. All for One is there to help (take advantage).

    Series
    Language:
    English
    Words:
    12,540
    Chapters:
    1/1
    Collections:
    1
    Comments:
    56
    Kudos:
    123
    Bookmarks:
    16
    Hits:
    673
  2. Tags
    Summary

    Anni Ishada had many regrets in life. Sure one could say that she is a success story: foster kid turned general surgeon at the emergency room of Mustafu General Hospital at only 26 was nothing to sneeze at. But underneath all that is Anya Shinsou. A kid who knew her best could never be enough; a kid who had been faced with an impossible decision. A kid who didn't exist anymore.

    Hitoshi Aizawa-Yamada doesn't know his 'real' last name. Nor his 'real' birthday. Or anything about his birth family. All he knows is that his dad (Aizawa) found him while on patrol on November eleventh, two thousand and eight at only 4 years old.

    Shouta Aizawa-Yamada could never forget the day he encountered his adoptive son. He could never forget the pain of the child who give Hitoshi to him. He'd searched for her, but she'd disappeared.

    Anya knew she'd never see her brother again.

    Hitoshi knew he'd never meet his birth family.

    But a familiar boy with purple hair shows up in her hospital.

    Did she really think Shouta could ever forget her?

    Language:
    English
    Words:
    984
    Chapters:
    1/?
    Kudos:
    1
    Bookmarks:
    1
    Hits:
    2
  3. Tags
    Summary

    During on of Eri's visits as U.A. She, along with Izuku, found herself in accident with a quirk. Now, Eri's now a teenager (with the mind of a child) and Izuku is now a toddler (and his memories regreted to his 5 year old self). It will be Bakugo's job babysitting them.

    Series
    Language:
    English
    Words:
    1,246
    Chapters:
    1/1
    Comments:
    11
    Kudos:
    25
    Bookmarks:
    3
    Hits:
    657
  4. Tags
    Summary

    Where All For One gets hit with a de-aging quirk and wakes up as a 13-year-old with no memories past his new physical age. What happens if none of the effects can be reversed, and All For One, also known as Yuoku Shigaraki, has to live a new life with a slightly different quirk, and surrounded by everything his adult self has wanted to destroy?

    or

    Where Yuoku Shigaraki, aka 13-year-old All For One becomes Aizawa's ward after being found in a collapsed warehouse.

    Language:
    English
    Words:
    30,304
    Chapters:
    7/?
    Collections:
    1
    Comments:
    175
    Kudos:
    588
    Bookmarks:
    166
    Hits:
    9548
  5. Tags
    Summary

    After a battle, disillusioned pro-hero Hawks and a villain Dabi are changed in their childhood counterparts.

    Language:
    English
    Words:
    1,392
    Chapters:
    2/2
    Collections:
    1
    Kudos:
    22
    Bookmarks:
    2
    Hits:
    797
  6. Tags
    Summary

    The Mazu family was found dead in their home in Mustafu, Japan, January 30th, 2014.
    Their only child, Anneka, disappeared that night, at the young age of seven, leaving behind a distraught best friend.
    Her body was never found.
    __________________________________________

    On March 5th, 2014, a quirk less girl, aged approximately seven years old, was found by police on the streets of Tokyo with no memory at all. Not her name, nor her age, or family. She is stamped Yamada Hanako (the Japanese version of Jane Doe), and tossed into the foster system without a second thought.

    __________________________________________

    April 15th, 2022, Yamada Hanako starts at the prestigious UA High School's hero course. She knows that she will likely never remember her past. She knows that the blankness in her mind, where her memories should be, will probably never go away. Trouble is, a certain class mate of hers seems to agitate the empty space in her head.

    Language:
    English
    Words:
    428
    Chapters:
    1/?
    Kudos:
    2
    Hits:
    49
  7. Tags
    Summary

    After an argument about adoption, Izuku & Shouto spend the night apart. When Izuku's hit with a de-aging quirk and left in Shouto's care, he's forced to come to terms with his fears about being a father.

    ***

    “I think we should adopt a baby.”

    Shouto doesn’t know exactly what he was expecting his husband to say, but it sure hadn’t been Izuku asking for a baby. Shouto’s mind grinds to a halt. Izuku wants a baby. His coherent thoughts cease, his mind simply repeating the words over and over again. Izuku wants a baby.

    “Shou?” Izuku’s quiet, uncertain voice breaks the loop in Shouto’s mind.

    His husband is looking at him intently, anxiously awaiting a response. They hadn’t ever talked about wanting kids. Shouto had just assumed that Izuku, like him, didn’t want any. A father. The thought sends a small shiver down Shouto’s spine. “I didn’t think you wanted kids, Izuku.”

    Language:
    English
    Words:
    15,424
    Chapters:
    5/8
    Comments:
    17
    Kudos:
    85
    Bookmarks:
    14
    Hits:
    1368
  8. Tags
    Summary

    He opened his mouth to tell the spectating students to go back to class when he managed to get a better look at the kid on the floor in the middle of the huddle.

    A kid whose face was barely visible under a cloud of purple hair that looked a little too similar to the time Shirakumo got sick with the flu and his cloud-like hair turned a stormy lilac.

    A toddler with dark crescents of exhaustion under his eyes that were way too heavy for his age.

    Shouta froze.

    No. No. Not him.


    or, Hitoshi gets hit with an age-regression quirk, and Shouta and Hizashi activate their protective dad modes for their son.

    Series
    Language:
    English
    Words:
    9,440
    Chapters:
    1/1
    Comments:
    8
    Kudos:
    241
    Bookmarks:
    21
    Hits:
    2997
  9. Tags
    Summary

    his hands aimed at the villain explosions cascading from them, at that moment a cry could be heard coming from the right of the hero “Woah man might wanna calm down there you’re scaring the kid” bakugo quickly looked to find the source of the cry

    “WHAT what do you mean icyhots going to have to grow up again”

    “I ain’t raisin him I have to be number one I can’t un trauma a kid that shouldn’t even be a kid in the first place it’s his own damn fault he’s like this anyway”

    Or

    Shouto Todoroki gets hit by a villain’s quirk and turns into a baby slowly aging back to his normal age as bakugo as a parent this can only go well right?

    Or

    Bakugo learns to care about people and becomes a great dad and a great hero at the same time did someone say number one in life cause that’s what’s going on here

    Language:
    English
    Words:
    9,352
    Chapters:
    3/?
    Kudos:
    17
    Bookmarks:
    3
    Hits:
    527
  10. Tags
    Summary

    “Are you disappointed in me?”
    When Hawks spun around in shock, Keigo flinched and leaned away. It hurt to watch. He crouched down and took the child’s small hands in his own, again wishing someone had been there for him when he was young.
    “I’m not, really. I just…” He leaned his head against their hands, holding them to his cheek. “I just don’t want anyone to know what my past was like.”

    ---

    Dabi picks up a child Hawks sent to the present by a no-name villain's quirk. Now present-day Hawks has to address the self-loathing he pretends he doesn't have.

    Language:
    English
    Words:
    6,513
    Chapters:
    1/1
    Comments:
    7
    Kudos:
    349
    Bookmarks:
    50
    Hits:
    2174
  11. Tags
    Summary

    This couldn’t be Bakugo. Not the Bakugo he knew. It couldn’t be. Maybe he was dreaming? Because the Bakugo he knew was 17 just like him, was only a little taller, and didn’t have a giant scar on the right side of his face nor did he have his ears pierced and…facial hair?

     

     

    When the fuck did that happen?!

    ˏˋ°•*⁀➷

    During a patrol, Pro Hero Red Riot gets his by a quirk that mentally de-ages him. He thinks he's 17, still attending U.A., still building his baby muscles, and still secretly in love with his best friend.

    Language:
    English
    Words:
    7,033
    Chapters:
    1/1
    Collections:
    2
    Comments:
    11
    Kudos:
    525
    Bookmarks:
    74
    Hits:
    4018
  12. Tags
    Summary

    Last thing Natsuo expected on the Friday was the whole League of Villains showing up on his doorsteps. With his boyfriend hit by a quirk that slowly makes him younger.

    ShigaNatsu Week: [Day 3]: Touch¦ Hit by a Quirk

    Series
    Language:
    English
    Words:
    3,477
    Chapters:
    1/1
    Collections:
    1
    Comments:
    2
    Kudos:
    68
    Bookmarks:
    9
    Hits:
    721
  13. Tags
    Summary

    Kirishima was hit with a quirk that turned him into a six-year-old.

    Bakugou decides it's up to him to take care of his best friend and kinda boyfriend.

    Series
    Language:
    English
    Words:
    2,456
    Chapters:
    1/1
    Collections:
    1
    Comments:
    10
    Kudos:
    255
    Bookmarks:
    21
    Hits:
    1459
  14. Tags
    Summary

    When Aizawa gets hit with a quirk, he does not expect to become a teenager again. Oh, well. This is fine. Aizawa can totally do one day as a UA Student.

    Enter Denki Kaminari.

    Language:
    English
    Words:
    2,686
    Chapters:
    1/1
    Comments:
    8
    Kudos:
    152
    Bookmarks:
    16
    Hits:
    1078
  15. Tags
    Summary

    “Tenko,” Izuku breathes his name, testing the sound on his tongue and how it feels to finally being able to say it out loud. Suddenly he’s too overwhelmed. He goes for this little boy and keeps him in his arms, running his fingers through his hair, laughing and crying simultaneously. He kisses his forehead again, simply feeling how little and warm he is, how he fits perfectly in his embrace, like he always belonged there.  “Tenko. Oh, Tenko—”

    Series
    Language:
    English
    Words:
    2,269
    Chapters:
    1/1
    Comments:
    6
    Kudos:
    165
    Bookmarks:
    23
    Hits:
    1408
  16. Tags
    Summary

    Katsuki Bakugou and Izuku Midoriya were just becoming what could be considered friends when everything got messy.

    They get hit by a quirk that makes them 3 years younger temporarily.

    Language:
    English
    Words:
    254
    Chapters:
    1/?
    Comments:
    1
    Kudos:
    51
    Bookmarks:
    5
    Hits:
    873
  17. Tags
    Summary

    Sometimes, Aizawa Shouta really liked his current batch of first years. 
    This wasn’t one of those times.  
    “I’ll be there in twenty,” he said down the phone without much enthusiasm. As he hung up, he glanced at Hizashi, who had turned on the bedside lamp and was peering at him in concern. 
    “That was Tsukauchi. He has Kaminari,” he signed, pulling the blankets away to stand up. 
    “He snuck out again?”  

    Aizawa gets a call to pick up Kaminari after he sneaks out and is picked up by the cops. To make matters worse, it turns out he's been hit by a quirk...

    Standalone. You don't need to have read part 1 & 2

    Series
    Language:
    English
    Words:
    3,541
    Chapters:
    1/1
    Comments:
    10
    Kudos:
    276
    Bookmarks:
    15
    Hits:
    1881
  18. Tags
    Summary

    You know, just your casual, de-aging fic. Except with an angry gremlin as a dad, an alien as an aunt, two crazy uncles and a whole lot of godparents.

    Basically, I had this idea earlier and wanted a de-aging fic, and so you got a de-aging fic XD

    Have fun lol

    Language:
    English
    Words:
    19,259
    Chapters:
    10/?
    Comments:
    29
    Kudos:
    246
    Bookmarks:
    37
    Hits:
    3961
  19. Tags
    Summary

    "How come your body's temperature is cold when you produce fire?" Hawks, with the innocence of a six-year old, asked Dabi.

    Dabi revealed a small part of himself and gets something in return.
    Series
    Language:
    English
    Words:
    427
    Chapters:
    1/1
    Comments:
    7
    Kudos:
    357
    Bookmarks:
    21
    Hits:
    2026
  20. Tags
    Summary

    He could see him though. His cheeks were round with baby fat, his eyes unshadowed, but he was unmistakably his Toshinori. Even before he'd gotten the weakly mumbled confirmation of the other's name he'd known. He could see Toshinori in the child's eyes, the deep blue gaze watery and afraid but so achingly familiar; he could feel it in his bones, where One for All sang and reached for the remnants of ashes that should have been there, but weren't.

    Or: Izuku has always been a dutiful son. All Might suddenly being younger than Eri isn't going to change that.

    Language:
    English
    Words:
    11,396
    Chapters:
    5/13
    Collections:
    2
    Comments:
    113
    Kudos:
    559
    Bookmarks:
    131
    Hits:
    5096

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