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Up, Down. Up, Down by Thefourthmoon
Fandoms: 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga)
02 Jul 2026
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Summary
“No spotter today?” the man redhead asked.
“Sick” Izuku said shortly, reengaging the machine and starting his third set. He hoped that the other man would understand that he wasn’t interested in small talk. Instead, the man stood there and waited for Izuku to finish his set.
“You know, your form is great, I mean it doesn't matter so much on the machine, but I’ve noticed your deadlifts as well in the past, you can lift pretty heavy for such a small guy.” the vaguely familiar man said. Izuku just sent him a glare, hoping that his quirk would now manifest at 26, and he would vaporize the man on the spot, or maybe just make him shut up.
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or, Izuku has an admirer at the gym.Bookmarked by Onlyus
03 Jul 2026
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Unbreakable Bond by neolfanfic
Fandoms: 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga)
26 Jun 2026
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Summary
Relationships between two alphas are extremely rare, if not completely taboo. Still, Eijiro wants to be with Katsuki, even though he knows their second genders won't make it easy, especially when it comes to intimacy...
But maybe adding a third person to their relationship, a pretty omega to soothe their instincts, would be the perfect solution.
- Language:
- English
- Words:
- 67,640
- Chapters:
- 31/31
- Comments:
- 285
- Kudos:
- 1,339
- Bookmarks:
- 260
- Hits:
- 34,660
Bookmarked by Onlyus
02 Jul 2026
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Even to the Death by chalk
Fandoms: 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga)
15 Apr 2026
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Summary
There’s a massive omega shortage, and without mates, alphas are dying out. Now by law all omegas must register themselves as soon as they present, and on their 20th birthday, they have to give themselves up as the prize to any alpha who claws their way out of a globally broadcasted brawl inside of an elaborate maze.
Late bloomer Izuku’s time has come, and all he can do is hope that whatever alpha he’s given to will be nice to him, even if they’ll never love each other. (If an alpha even shows up to fight for him, that is.)
But before the show officially starts, two of his best friends sneak in to make sure he knows that everything will be okay, and even if he doesn’t really believe them, just knowing that they have his back is enough to get him through the door to face his fate.
The fact that both of them are alphas is something he’s never had to think about until reality hits him like a truck, and all he can do is watch.
- Language:
- English
- Words:
- 21,891
- Chapters:
- 1/1
- Collections:
- 1
- Comments:
- 18
- Kudos:
- 322
- Bookmarks:
- 63
- Hits:
- 3,178
Bookmarked by Onlyus
01 Jul 2026
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The Magic Of TikTok by SapphireTwilight
Fandoms: 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga)
29 Oct 2023
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Summary
Katsuki Bakugo isn't trying to save anyone from their shitty boyfriend. He's not looking to earn anyone's praise. And he definetly has no desire to be on TikTok with '#FindDeku' attatched to his face.
He just wants to run his bar with his stupid friends in peace.
But Kaminari is a meddling gremlin with a camera, and Mina has far too much social media for Katsuki's mental health.
Somehow, it works out.
Bookmarked by Onlyus
26 Jun 2026
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An Unforgettable Love by SapphireTwilight
Fandoms: 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga)
12 Aug 2025
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Summary
Jumping in front of Izuku, Katsuki gets hit with a quirk. It makes him believe he and Izuku are married. If the quirk is broken, it can cause Katsuki servere mental damage, meaning Izuku has to play along until Shinso comes back from his mission. Izuku, wanting to save his duo partner, agrees to be Katsuki's pesudo-husband for the next week.
But what happens when the illusion blends into reality, and Izuku realizes things about himself and Katsuki?
Series
- Part 3 of SapphireTwilight Twitter Collection!
- Language:
- English
- Words:
- 12,340
- Chapters:
- 1/1
- Collections:
- 2
- Comments:
- 110
- Kudos:
- 2,154
- Bookmarks:
- 431
- Hits:
- 15,903
Bookmarked by Onlyus
25 Jun 2026
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Why Not Here by bo (milknbones)
Fandoms: 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga)
05 Mar 2026
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Summary
“Even if that's true. He would never admit to it. Kacchan would rather sell his kidney on the black market than be cordial with me.”
The two process the heartbreaking proclamation that dangles in the atmosphere. For Izuku, it feels like the painful truth of his reality, but for Katsuki, it’s a gutwrenching realization of how deep the insecurities go.
“Izuku.” The use of his given name activates a rush of tears as he looks at the barbarian. Red eyes are clouded with sincerity, something usually too vulnerable for Kacchan’s liking: “I love you.”
Izuku absolutely breaks, a sob rips the back of his throat, making him suffocate momentarily. His leg falls out of the chair as his arms wrap around his waist.
“That’s not fair,” He can't breathe through the rattling hiccups, “Why can Kacchan love me in every other universe except this one?”
OR: fantasy Katsuki gets swapped with UA Katsuki and Izuku is freaking the fuck out about it
Series
- Part 10 of wonder duo one shots
Bookmarked by Onlyus
21 Jun 2026
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When Loss is a Weapon by ObscureBrainwaves
Fandom 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga)
05 Jun 2026
Summary
A series focusing on Izuku and Katsuki as vigilantes, and how Aizawa helped bring them to the Underground legal side of the fence.
Izuku as Nightingale / Hermes
Katsuki as Sparks / Nitro- Words:
- 25,020
- Works:
- 3
- Bookmarks:
- 55
Bookmarked by Onlyus
18 Jun 2026
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Build Me Up, Buttercup by redfoxfern for owlfowlfa
Fandoms: 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga)
27 May 2025
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Summary
“Yeah, what’s new?” Katsuki pokes the fragmented gauntlet. “Can you fix this for tomorrow? I’ve got work at eight AM.”
Izuku deadpans.
He takes a big breath and crosses his arms.
And Katsuki isn’t fucking looking at his biceps again, he’s fucking not, fuck off.
“I just fixed your gauntlets, Kacchan. Like, last week. What did you do this time? These are expensive, y’know!”
“Maybe if you made better shit they wouldn’t break so often.”
“Maybe if you came for maintenance more often like I told you to, they wouldn’t break so often.”
“I’m busy.” Katsuki shrugs.
Izuku gripes like he’s fed up with him (he’s not) and starts picking up the disjointed pieces.
“Ugh, these are wrecked.” He holds one up close to his face and scrutinizes it. “It’s gonna take me all night.”
“You’re here anyway, aren’t you?”
--
Quirkless, Support Tech brainiac Izuku does a little work for his best friend, Pro Hero Katsuki. If you catch my drift.
Bookmarked by Onlyus
13 Jun 2026
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Summary
Despite breakthroughs in Spyrite technology, an energy crisis continues to threaten both Rieze Maxia and Elympios. After the assassination of a major political figurehead, rising tensions between the two continents boil over into an all out war. Jude Mathis and his friends set out to save the world a third time. Set five years after the events of ToX2.
**COMPLETE**
Bookmarked by Onlyus
01 Jun 2026
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Deku, You're Famous by SapphireTwilight
Fandoms: 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga)
26 Nov 2023
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Summary
Izuku has a normal life. He's a data analyzer, enjoying his single (but maybe a little lacking) life in New York with his plants.
But he's not technically alone; he's friend with Chargebolt, a well known gamer who makes him play on his stream every Thursday.
When a night with drinks leads to a discussion about Izuku's not-so-secret Twitter, a bet is made; if Izuku gets to 100k followers, he'll kiss a random follower on his first live stream.
Then Dynamight, a very popular (and attractive) Twitch gamer, raids the stream, and Kaminari gets a
terriblegreat idea.- Language:
- English
- Words:
- 28,339
- Chapters:
- 4/4
- Comments:
- 473
- Kudos:
- 5,668
- Bookmarks:
- 1,167
- Hits:
- 57,194
Bookmarked by Onlyus
20 May 2026
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The Ember Between Us by SapphireTwilight
Fandoms: 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga)
24 Oct 2025
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Summary
Izuku is an omega hero in a world made for alphas. Using that for motivation, he defeated All For One, graduated UA, and made it into the top ten hero rankings. Plus, he’s managed to accidentally stumble into a ‘beneficial’ dynamic with his alpha best friend, Katsuki. At twenty-three, he has found a balance in his life most would envy.
Until the perfect storm of hormones, instincts, and a villain attack cause his world to flip upside down.
Now, the life growing inside Izuku has the ability to light the path for his and Katsuki’s new journey together… or burn everything they’ve built to the ground.
- Language:
- English
- Words:
- 139,739
- Chapters:
- 21/21
- Comments:
- 2,318
- Kudos:
- 4,180
- Bookmarks:
- 960
- Hits:
- 123,027
Bookmarked by Onlyus
17 May 2026
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The Outcome Of A Good Mistake by SapphireTwilight
Fandoms: 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga)
01 Jun 2025
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Summary
Quirkless Izuku Midoriya helps run the best hero support business in all of Japan. With his high intelligence and widespread knowledge of heroes, his skills have become well known to hero society.
So when his self-made A.I, ERI, informs him of an incoming message, he assumes it's an order (or Mei demanding he finally turn in for the night).
Until ERI announces the GROUP texts are from unknown numbers. Ones connected to a particular pro-hero of his past.
- Language:
- English
- Words:
- 18,941
- Chapters:
- 3/3
- Comments:
- 229
- Kudos:
- 2,513
- Bookmarks:
- 470
- Hits:
- 22,938
Bookmarked by Onlyus
12 May 2026
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Love? Oh Brother... by SapphireTwilight
Fandoms: 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga)
24 Nov 2025
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Summary
Izuku is best friends with Ochaco, and nothing matters more.
Especially not the fact that he's in love with her older brother, Katsuki. He plans to take that to the grave.
But when one innocent interaction makes a secret slip out, Izuku is caught between two parts of his heart. Will he stay by Ochaco's side and give up his feelings for Katsuki? Or will Katsuki's temptation be too hard to ignore?
Series
- Part 6 of SapphireTwilight Twitter Collection!
- Language:
- English
- Words:
- 32,786
- Chapters:
- 4/4
- Comments:
- 394
- Kudos:
- 3,532
- Bookmarks:
- 785
- Hits:
- 40,872
Bookmarked by Onlyus
11 May 2026
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The Perfect Accident by SapphireTwilight
Fandoms: 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga)
22 Dec 2025
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Summary
Izuku’s an up-and-coming omegan photographer. The growing stress makes him forget his birth control, so Izuku makes an appointment with his gynecologist for the shot.
He doesn’t have time to worry about his weird side effects when he gets the chance of a lifetime; a photo shoot with popular alpha model, Katsuki Bakugo.
Izuku couldn’t predict that the alpha, upon meeting him, would claim the omega’s pregnant with his pup.
The only problem? Izuku’s a virgin.
- Language:
- English
- Words:
- 15,470
- Chapters:
- 1/1
- Collections:
- 1
- Comments:
- 107
- Kudos:
- 2,922
- Bookmarks:
- 587
- Hits:
- 23,856
Bookmarked by Onlyus
09 May 2026
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To Be A Queen by SapphireTwilight
Fandoms: 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga)
10 Mar 2026
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Summary
In The Kingdom of Trev, Queen Izuku has worn the crown for twelve years. He's grown wiser with age and the sacrifices he's made for his people. Now, the omega's ready to end the war and bring peace to both Trev and Sange.
Then he's given a 'gift'; Katsuki Bakugo, the Prince of Sange. A decade younger, the dangerous alpha is ready to restart the fire inside Izuku's soul.
The queen, who long ago accepts his fate, is suddenly given a path full of danger and passion. Will he let himself risk it, or reject the growing feelings between two broken souls?
Series
- Part 1 of Kingdom of Trev
- Language:
- English
- Words:
- 73,270
- Chapters:
- 10/10
- Comments:
- 543
- Kudos:
- 1,672
- Bookmarks:
- 441
- Hits:
- 30,849
Bookmarked by Onlyus
09 May 2026
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The Taste of Coming Home by SapphireTwilight
Fandoms: 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga)
01 May 2026
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Summary
Izuku wakes up after a night out to find Katsuki in his bed... naked.
The thing is, neither of them drank. So how did his best friend end up here?
And why isn't Katsuki mad about it?
(Day 1 of Twin Stars Spring Festival)
Series
- Part 1 of Twin Stars Spring Festival
- Language:
- English
- Words:
- 1,563
- Chapters:
- 1/1
- Collections:
- 1
- Comments:
- 47
- Kudos:
- 565
- Bookmarks:
- 64
- Hits:
- 2,785
Bookmarked by Onlyus
02 May 2026
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Until it Means Something by etelvina
Fandoms: 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga)
28 Nov 2025
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Summary
‧₊˚ ┊In college, Izuku ends his and Katsuki’s friends-with-benefits arrangement when he decides he wants something real. Katsuki is left furious, and the fallout hits them both harder than either expected.
Bookmarked by Onlyus
01 May 2026
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A Hunter's Intent by SapphireTwilight
Fandoms: 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga)
29 Apr 2026
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Summary
In the Healing Village lives Prince Izuku, the only son to King Toshinori and Queen Inko. Due to his omega status, the village must hold a trial for the right to be his mate (and the new king).
Despite respecting his parents, Izuku yearns for romance. He wants to fall in love, but with the trials, he knows his fate. He'll be handed off and mated to a stranger. The day he meets his mate, he'll be bonded. It's everything he's dreaded since learning of the fertility festival.
That is until Katsuki, prince of the Hunter Village, enters the tournament. Nobody expects it, and Izuku's unsure what the alpha is looking for.
But with each trial Katsuki wins, Izuku feels something... changing. And he wants to know why the prince seems so intent on winning his hand in marriage. Is it for the crown? Or something more?
Bookmarked by Onlyus
30 Apr 2026
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Summary
Yami sends out four of his magic knights to investigate a well explored dungeon. Three of them come back a little different.
The story of Yami's adventures in unexpected fatherhood, Asta's sudden promotion to 'not the youngest member of the squad anymore' and Vanessa's new talents in children's toy manufacture.
Also featuring unpleasant realisations, child endangerment and a hefty dose of making things better with cuddles and pancakes.
Series
- Part 1 of Small Problems
- Language:
- English
- Words:
- 52,198
- Chapters:
- 6/6
- Collections:
- 3
- Comments:
- 248
- Kudos:
- 1,064
- Bookmarks:
- 231
- Hits:
- 22,264
Bookmarked by Onlyus
25 Apr 2026
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Summary
What Noelle and Yuno didn't realize was that a contract wasn't the same across all of the demon hosts. Sometimes, a contract was just that - an agreement between humans and demons that had an expiration date at the end. Sometimes, it was a life-long friendship between the two, and sometimes, it was a one-and-done and everyone moved on with their lives afterwards. But this isn't like any of those times, and Noelle and Yuno learn the hard way as to why.
[Asta/Anti-Magic Demon, one-sided AsuNoelle, one-sided AsuYuno, canon divergence, spoilers up to chapter 262]
Series
- Part 2 of Gothic Horror Prompt Fills - 2020
- Language:
- English
- Words:
- 3,570
- Chapters:
- 1/1
- Collections:
- 1
- Comments:
- 16
- Kudos:
- 199
- Bookmarks:
- 33
- Hits:
- 2,721
Bookmarked by Onlyus
20 Apr 2026