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1. Gaining Family Changes Everything by Anonymous

   Fandoms: Harry Potter - J. K. Rowling, 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga)  

   • Not Rated
   • Creator Chose Not To Use Archive Warnings
   • M/M, Multi, Other
   • Work in Progress

   26 Feb 2026

   Tags

   • Creator Chose Not To Use Archive Warnings
   • Aizawa Shouta | Eraserhead/Sako Atsuhiro | Mr. Compress/Shirakumo Oboro/Yamada Hizashi | Present Mic
   • Dabi | Todoroki Touya/Iguchi Shuuichi | Spinner/Shigaraki Tomura | Shimura Tenko/Takami Keigo | Hawks
   • Midoriya Izuku/Shinsou Hitoshi/Todoroki Shouto
   • Harry Potter/Undecided Other Character(s)
   • Minor or Background Relationship(s)
   • Harry Potter
   • Aizawa Shouta | Eraserhead
   • Yamada Hizashi | Present Mic
   • Shirakumo Oboro
   • Sako Atsuhiro | Mr. Compress
   • Dabi | Todoroki Touya
   • Shigaraki Tomura | Shimura Tenko
   • Shinsou Hitoshi
   • Eri (My Hero Academia)
   • Weasley Family (Harry Potter)
   • Hermione Granger
   • Sirius Black
   • Remus Lupin
   • Background & Cameo Characters
   • No I haven't tagged every character nor will every character appear
   • I gotta focus on the major ones somehow with the large cast sobs
   • no beta we die like my will to live
   • Parental Aizawa Shouta | Eraserhead | Dadzawa
   • Parental Yamada Hizashi | Present Mic
   • Parental Shirakumo Oboro
   • Parental Sako Atsuhiro | Mr. Compress
   • Kurogiri Becomes Shirakumo Oboro Again
   • Quirks and Wizard kind both exist
   • The timeline is fucked to hell and back
   • Don't think about it
   • Past League of Villains Redemption (My Hero Academia)
   • Except AFO bc we hate that guy
   • Harry Potter Needs a Hug
   • Fluff and Angst
   • Family Fluff
   • This is extremely self indulgent and I'm just sharing it for the lols
   • Trans Characters
   • non-binary characters
   • Gender Non-conforming Characters
   • Polyamorous Characters
   • as if the poly wasn't clear by the clusterfuck of ships lmao
   • There's background world-building but I don't go into detail about it
   • Just Know That It's There
   • Please assume that the & tags for characters also apply to all of them
   • Eri is the best little sister
   • I Disregard The Canon And Replace It With Fanon
   • Alternate Universe - Canon Divergence
   • Alternate Universe - Everyone Lives/Nobody Dies
   • Eventual Happy Ending
   • Harry Potter is Heir to Multiple Noble Houses
   • I try my best to avoid explicit bashing of any character
   • But I'm only human and I do so enjoy my tropes
   • Going back to the timeline
   • League stuff after Kamino doesn't happen
   • But Eri still gets saved from Overhaul
   • Also assume everyone is some form of Autistic or ADHD bc of author projection
   • Plural Shirakumo Oboro with Kurogiri
   • It's not relevant to the plot but it's Important To Me that you know it exists
   • The Plural Character(s) is(are) Written by a Plural Author

   Summary

   Everyone knows the story of Harry Potter.
   Or do they?
   Come along with me as I dip my toes into this niche crossover and give Harry the largest family ever possible solely because I'm a villain apologist

   (To Mr. Shouta Yamada-Aizawa,
   You might not know me, and that's okay. I'm reaching out to inform you that I'm your second-cousin once removed and would like to get to know more family.
   Regards, Harry Potter)

   (And after breakfast, he prepared properly; packing up a suitcase when Oboro helpfully pointed out that Shouta would likely need to get legal permission to take Harry out of the country.
   Oh joy.)

   Note:
   This fic is loosely inspired by Of Capture Weapons and Lightning Bolts by Dark_Elf_Writes and the several crossover works by Hadesbroken_lover (I recommend both authors in general) among various different HP and MHA fics; crossover and not
   If some themes/tropes are familiar, that's why, though I do try to put my own spin on them

   Series

   • Part 1 of Crossover content

   Language:

   English

   Words:

   13,062

   Chapters:

   4/?

   Collections:

   1

   Comments:

   36

   Kudos:

   82

   Bookmarks:

   35

   Hits:

   1,181