Vivid’s safe for work omegaverse fanfics
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Listing Series
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You know where to find me (And i know where to look) by IDidAThing
Fandoms: 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime), 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Manga)
19 Mar 2025
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Summary
While Giyu knew Master Kagaya had sent Tanjiro to his estate to try and convince him to participate in the training of the demon slayers, It didn’t stop him from being incredibly uninterested in the omega’s persistence. He wanted to be left alone was that such a hard concept to understand?
Giyu took a step out of his room His nose twitched as a scent caught his nose, there was Tanjiro’s usual scent but there was something else- Oh gods above had the brat (why was he calling his- shut up brain Tanjiro is not his pup- a brat?) gone into heat while he was here? Great exactly what he needed.
he found himself nudging Tanjiro awake. He stepped forward hesitantly as he crouched a bit. He was a bit reluctant to wake the other up because of the possible outcome but he needed to make sure Tanjiro was okay so he carefully nudged the other “Hey, kid wake up”
Tanjiro whined as he blinked awake, He looked over at Giyu not yet realizing that he was in heat yet as he smiled brightly, “Mr. Giyu!” He said cheerfully “Good morning! Are you ready to start training?” He asked curiouslyGiyu blinked at the other's enthusiastic personality. “Tanjiro- you’re in heat… you should go back to the butterfly mansion” he muttered.
Series
- Part 1 of Vivid’s safe for work omegaverse fanfics
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And they called him Lemon Boy by IDidAThing
Fandoms: 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime), 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Manga)
21 Mar 2025
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Summary
Gyomei huffed as he walked inside, his heavy footsteps reverberating under the creaking wood of the engawa, It was early in the morning and he had been training outside for a while.
He stepped into the kitchen grabbing a cup of tea this morning was turning out quite well,
Or, at least that’s what he thought. Until a bitter scent of distress hit him seemingly coming from Genya’s room- the scent was distinctly omegan but that couldn’t be right because Genya was a beta wasn’t he? Was one of the kakushi distressed? No it was definitely coming from Genya’s room. He set the empty cup down as he walked into the hallway.
He walked down the hallway the scent “Genya? Are you alright?” Gyomei asked concern
Genya whined pitifully He was a disgusting excuse of an omega. Granted no one knew he was an omega since well omega’s weren’t exactly allowed in the demon slayer core because they were so rare- and a demon slayer’s life expectancy was about a few years.
He dry heaved into a bucket he’d smuggled into the room,
He jerked as he heard Gyomei's panic rising in his chest, he could easily get him kicked out and then he’d NEVER get his brother to forgive himSeries
- Part 2 of Vivid’s safe for work omegaverse fanfics
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I’m not a mama’s boy.. (except i am.) by IDidAThing
Fandoms: 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime), 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Manga)
21 Mar 2025
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Summary
“What’s wrong? Is it a demon?!” Inosuke yelled looking around swords out, He was a bit… slow when it came to secondary gender stuff.
Shinobu stared at him before huffing softly, a pained expression flickering across her face as she watched the young alpha pup run around seemingly looking for a demon, “No, Inosuke, it’s not a demon.. I’m just.. in heat.” She whispered
“But your smell! You smell hurt! Why are you hurt?!” He asked in frustration.
Shinobu smiled slightly as Inosuke crawled into the nest beside her, she appreciated how much he cared for her even when he was completely oblivious to her. She winced slightly as her scent glands swelled further, she shifted into a more comfortable position, she huffed rubbing at it trying to make it just stop-
Inosuke blinked looking over at her, okay so that thing on her neck definitely hurt.. and rubbing at it made it feel better- it’s where her smell was strongest but if he could help then he’d do anything to help! “Can I.. help?” He asked hesitantly not really knowing what to do but he didn’t like seeing her in pain okay?! He wanted her to be normal Shinobu! Not weirdly sweet smelling making sad hurt noises Shinobu!
!SAFE FOR WORK!
Series
- Part 3 of Vivid’s safe for work omegaverse fanfics
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I’m just trying to help you! (Let me help you.) by IDidAThing
Fandoms: 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime), 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Manga)
22 Mar 2025
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Summary
Tanjiro growled under his breath as he watched Sanemi like a hawk,The last thing he wanted was for Nezuko to get hurt, especially by someone who she was supposed to trust.
Tanjiro shuddered at the thought of letting Sanemi ANYWHERE near Nezuko like this, the alpha had already TRIED to MURDER her his omega instincts were saying he was doing the right thing. But did he REALLY want to trust his baby sister with an alpha like Sanemi? The thought alone was terrifying.
He shook his head, no no he couldn’t trust Sanemi with Nezuko instead he shut the door not wanting Sanemi anywhere near them as he moved over to lie with Nezuko, pulling her into his arms as he shushed her trying to bring up a shaky purr to comfort her
Something was wrong. That was the first thing Sanemi realized as he stirred awake. He could smell distress and his brain immediately tried to wake up awake as he realized it was a pup in distress- great something was wrong with one of the Kamado brats, The cabin only had one bedroom being the one the siblings were in leaving Sanemi to sleep on the world's most uncomfortable couch ever
He could keep Tanjiro and Nezuko safe.
SAFE FOR WORK!!!!
Series
- Part 4 of Vivid’s safe for work omegaverse fanfics
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Let the shadows fall behind you by IDidAThing
Fandoms: 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga)
30 Mar 2025
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Summary
He ran a hand through his long black hair as he moved down the hallway towards Eri’s room, he raised his calloused hand to knock on the door with his knuckles when he heard a noise. Was that a whine? “Eri, are you alright?” He asked his brain immediately going into ‘overprotective dad mode’ as he cracked the door open. “Can I come in?” He asked hiding the worry in his voice as his scent of coffee and vanilla shifted to have a tint of worry underneath the usually pleasant scent.
Eri whined pitifully, she didn’t know why her brain was screaming at her! She was just doing what it wanted so she’d have a few minutes of peace but it won’t stop! She’s doing the best she can! She tore off the blankets and pillows and started again. Placing pillows in an oval shape as she stuffed soft fluffy blankets into the center before putting her favorite blanket- a cat one Shouta got her, But it still wasn’t right and she didn’t know why!
Series
- Part 5 of Vivid’s safe for work omegaverse fanfics
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I’ll be quiet. by IDidAThing
Fandoms: 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime), 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Manga)
21 Apr 2025
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Summary
A few months ago Obanai had ran away from the cult his family ran, Away from them abusing him and criticizing him and fetishizing him for being the first omega born in the iguro clan in hundreds of years-
Until the snake-demon had tried for come after him and kill him for being disobedient, However.. Obanai had lived because a hashira, Shinjuro, had came across the situation and killed the snake demon before taking Obanai in..
Why didn’t you tell me?” He asked quietly as his scent shifted to be more soothing and comforting.Obanai had flinched when Shinjuro reached out but quickly stopped and let out a little sigh as the hand came in contact wih his as he finally felt the tears swell.
“Because- you’re an alpha” He said quietly.
“Obanai.. tell me honestly, did she ever touch you?” He asked
Obanai paused, Thinking back to all the times the snake demon had wrapped herself around him and whispered about how she couldn’t wait till he was his heat and she could ‘have him’ he felt sick to the stomach at the memories, He didn’t want to think about how much they terrified him. He swallowed. “she never- actually touched me.. she just said she would when I went into heat.” He said
Series
- Part 6 of Vivid’s safe for work omegaverse fanfics
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The League of Omegas by IDidAThing
Fandoms: 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga)
05 May 2025
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Summary
Toga didn’t mean to kill some alpha who was in rut! She only wanted to taste his blood because he was cute! And now she was in some stupid heat and now she was begrudgingly going back to the base.
Now what will she do since Dabi and Tomura seem to be insistent on making her comfortable during her first ever heat?
SAFE FOR WORK!
Series
- Part 7 of Vivid’s safe for work omegaverse fanfics
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Heaven knows your name, (I’ve been praying.) by IDidAThing
Fandoms: 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime), 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Manga)
29 May 2025
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Summary
“Akaza.” He stated firmly, Golden eyes looking back at red and yellow. “…Can I ask you something?”
“What is it, Upper one?” Akaza asked
Kokushibo paused for a few long moments, Hands clenching into the sheets. “You have never let anyone attempt to court you.” He stated, Eyes boring into the omega’s. “Not even during heats.”
He hesitated before asking the next question, Part of him was unsure if he was even able to ask this. “Why is that?”
Akaza hesitated, Did he really want to admit this to Kokushibo of all demons? Not really, But the dumb omega part of him wanted to get this off his chest.
“It feels like I’m betraying someone if I get interested in another. I don’t remember who they are or what their gender or secondary gender was, I don’t know if I remember their scent, It just has a tug in the back of my mind that it’s wrong, That I should be with them instead.” He explained with tired eyes.
It felt like a punch as the realization that the person Akaza was trying to be loyal to, was most likely gone was…Heartbreaking.
“You don’t even remember them?” He asked quietly.
“No,” Akaza replied, staring up at the ceiling quietly
SFW
Series
- Part 8 of Vivid’s safe for work omegaverse fanfics
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He’s a monster, But i dub him safe. by IDidAThing
Fandoms: How to Train Your Dragon (Animated Movies)
24 Jul 2025
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Summary
Krogan lunged forward, pulling the knife out roughly before shoving the bottle down Hiccup’s throat, “Plug his nose.” Krogan ordered as Viggo nodded holding Hiccup’s nose shut.
Hiccup thrashed and fought the entire way, he sprayed a bit of it out of his nose but it still fell down his throat. After a few seconds maybe less Hiccup suddenly convulsed, his entire body locking up like he was having a seizure or something as he crashed down onto the floor with a shriek of pain before tears sparked in his eyes- It was ripping through his entire body making everything it touched as it went down alight in flame and pure unfiltered agony as it clawed his insides and left venomous rakes in its wake making him thrash back as he bit his tongue so hard he nearly bit it off-
Viggo ran over and knelt down next to Hiccup, ignoring the scent of bitter agony and focusing only on the boy.It was a battle, One part of him enjoyed seeing Hiccup writhe around like a pathetic worm, but the other- the alpha part of him, wanted oh so badly to comfort the screaming, crying, Trembling, Pup and gather him into his arms and take the omega pup somewhere comfortable and safe-
Eventually, the alpha side won.
SAFE FOR WORK
Series
- Part 9 of Vivid’s safe for work omegaverse fanfics
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Summary
Rudo had been dropped from the sphere roughly.. a year ago? Maybe more maybe less. It was hard for him to tell the time. He’d been dropped into a wasteland of trash filled with monstrous beasts, and he’d been dumb enough to think a bunch of traffickers were going to be his salvation when they’d brought him away from the wasteland that was swarming with beasts.
He thought they were trying to help him.
How wrong he was.
He’d quickly realized that he’d been fooled when they’d ripped his clothes off to sell them, when they’d chained him down in an old van, when they’d driven him somewhere for days without food or water, when they’d finally brought him to an auction to sell him like cattle.
———————————————————————
“Thank you all for coming to this annual auction, As the night comes to an end I’d like to offer you something I doubt any of you have seen before!” The man called as a few people clapped in approval. The man then stepped back as two betas dragged what was undeniably-
An omega kid, onto the stage from behind the curtains.
Enjin barely stopped the bile from raising in his throat.
Series
- Part 10 of Vivid’s safe for work omegaverse fanfics
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Look at me. (Love me) by IDidAThing
Fandoms: 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Manga), 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime)
27 Dec 2025
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Summary
“I’m pregnant.” Iguro suddenly blurted.
Sanemi blinked, mulling over the words that had just been blurted out. Iguro was pregnant, and it was his?
“What.” He asked in a tone a bit harsher than he meant, looking over at the omega whose hands were trembling. And before he could say anything else, Iguro spoke.
“I’ll get rid of it,” Iguro said in a strained voice. “I understand you wouldn’t want a pup, We’re both busy and—“
“Iguro.”
“—We’re both hashiras, we don’t have time for a kid, we’re not even together—“
“Iguro.”
“—And we’re not even together, it was just a hookup for your rut, I don’t want you to think I was trying to baby trap you! I just—“
“Obanai!” Sanemi snapped. The omega blinked, looking over at Sanemi, His hands clenching into his striped haori, He’d never seen Iguro be nervous, He never saw him lose his cool or be scared, It made his brain tick in discomfort at seeing his friend so upset.
“You’re pregnant..” Sanemi murmured as he shifted to sit facing Iguro, looking down at the omega’s belly.
“I am,” Iguro said quietly, not exactly meeting Sanemi’s gaze.
Series
- Part 11 of Vivid’s safe for work omegaverse fanfics
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Take my bones (just not my soul) by IDidAThing
Fandoms: 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime), 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Manga)
06 Jan 2026
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Summary
Kaigaku didn’t want this.
Just because he knew it was a possibility didn’t mean he wanted it to happen.
He knew once Kokushibo offered to train him himself that there was a chance, A chance that the older would want more. Because it was more than common— Even normalized— for experienced samurai to have intimate relations with their trainees.
“MAH-stEr!- Pl-U-Easee!” He choked out as black spots danced in the corners of his vision, gritting his teeth as his arms trembled, struggling to keep them up.
Kokushibo stared him down. His expression unreadable, before his grip loosened, Dropping Kaigaku roughly onto the floor. Kaigaku gasped, heaving as his shoulders quivered, His eyes wide as he struggled to catch his breath.
He looked up at Kokushibo, the elder standing over him and looking down at him. “Master-“ He sucked in a heavy breath, Sweat rolling down his forehead and temple, “I-“ He was swiftly cut off.
“Do not give me excuses.” Kokushibo drawled. “Get on the bed.”
Series
- Part 12 of Vivid’s safe for work omegaverse fanfics