21 - 40 of 877 Works in Ecto-Vagina (Undertale)
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Nightmare has always been distant from his gang for multiple reasons. But deep down, he does love them. How does he show his affection towards them while having plausible deniability? Sex.
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Edge is a child. Well, a teenager, but a child nonetheless. Children needed love. Edge never received it. Edge looked for it in the worst way possible.
Coffee is an adult. Well, a young one, but an adult nonetheless. Adults needed love. Coffee never received that. Coffee was happy to provide Edge with plenty.
TLDR: Edge gets groomed by Coffee.
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Dream felt nervous.
He was usually the optimistic one, always seeing the bright side of things. But tonight, something felt off.
The house was silent. Nightmare had been working late hours recently, leaving Dream to eat dinner alone, but this wasn't loneliness creeping in. This was fear.
He didn’t like being separated from his twin. Not now. Not when everything was so wrong.
Not when he knew he was being watched.
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AKA Dream and Nightmare getting stalked by our two lovable boys, Killer and Cross <3 haven't written a fanfic in years so this might be ass. Also title is inspired by the song with the same name!!
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Underneath My Wings (You'll Be Loved) by TsunaidaMay for ScaredMee
Fandoms: Undertale (Video Game)
28 Jul 2025
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“I don’t fucking belong to you,” Killer snapped, picking up his attempts to free himself. “I belong to Nightmare.”
“You used to, yes, but you belong to me now.”
“What makes you think he’ll let you take me from him?” Killer snarled. He still served a purpose to the other, still made his existence worthwhile. Even if Nightmare didn’t care much for him, Killer had sworn his loyalty in exchange for being able to experience something new. As long as Nightmare kept up his part of the deal, so would Killer.
“Take you?” Sol asked, his smile only widening. “Why would I need to take you if he has given you so willingly?”
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Life moves on. With Nightmare in jail and his gang free to live their lives, they have to find ways to occupy their time. Either with finding love or starting families or discovering things about themselves they’d long since forgotten. The trauma will never leave and there will always be setbacks on their journeys, yet life moves on.
(The second part to my story Uncut Quartz and Glimmering Pyrite. I’d recommend reading that first, but it’s not required.)
Series
- Part 2 of Gemstone Chandelier
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A night shared between a King and his spymaster. It’s just as they want it, in their private space where no one can dictate how they act. It’s perfect.. Almost.
a dustmare royaulswap oneshot(???)
Series
- Part 1 of Royaulswap — xcvravi & moonyun0
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It would’ve been peaceful for Dust as he collapsed onto his boyfriend’s couch — stretched out and waiting for Epic to return home — but the poor skeleton had other things on his mind. Starting with the simmering heat in his bones…
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The world needs more EpicDust, or Painkillers as me and Buu call them...
I don't write porn so often guys you have to believe me -
milk makes the bone(rs) stronger by ohitsthatguy for Chris_ghosty77
Fandoms: Undertale (Video Game)
19 Jul 2025
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“Seems my pretty needs some help letting out more milk.” he says with a hum, pulling out his dick and rubbing it around Outer's asshole, earing a soft whine from the cow.
a fic exchange with @Chris_ghosty77 !! :D
warning, if you do not like their fics, you won't like this lol
Series
- Part 9 of Mmm spicy
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Nightmare's New Toys, I Mean Boys by Dannasgirls96, StellarNova489
Fandoms: Undertale (Video Game)
15 Jul 2025
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They never knew Nightmare overheard their drunken conversations. Now, they will learn how to be the perfect Boys for him. One by One.
Nightmare only wants what's best for them after all. They Will Be Good Boys.Series
- Part 1 of Nightmare Owns Them
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Hello, my name is Mazy, now that you will be a reader soon, you are known as a Mazyville, I'm nonbinary and go by they/them. My favorite fandom is Undertale and its alternative universes. I write semi-literate so all can understand well. English isn't my first language, though, so don't be too bitter.
I'm not a new writer, but I've never written on AO3 before. I'll be taking requests for any fanfiction Idea you have, not a short, but I'll make a not-so-long story about it. Just comment with your main idea or a summary of what you want your story to be, it can be ANYthing and ANY ship.
READ THE REST OF IT TO FIND OUT MORE!! AND READ THE NOTES!!!
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Peace was a word Killer only heard in dreams. But now that he owned his own house with his loving partner, Cross, the realization hit him that he was truly free and had his whole life ahead of him. What’s next for them?
His attention drifts to the floating target above his chest and an idea bloomed. A way to show his devotion to Cross. It’s one of the few things that haven’t been taken from him. One of the few things he could give to Cross that he’d given to no one else.
Series
- Part 1 of Gemstone Chandelier
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a brick-boot swimming lesson in the deep end of my adolescence by cashtastrophe
Fandoms: Undertale (Video Game)
28 Jun 2025
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That Time in the Basement—and he always thinks of it like that after, capitals and all—isn't even close to the first time he's caught them.
It's the first either of them knows about, probably, because Papyrus is small and limber and very good at hiding in small spaces, and also at being quiet when he really has to, if only then.
(a request from tumblr for the fell bro's First Time that's just gotten real out of hand and real gross. Title stolen from Modern Baseball’s ‘Notes’ )
Series
- Part 8 of goddamn, we missed the vein
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Inspired by DarkxSoulzyxCaliberx comic. Their comic was 'what if Killer died and got replaced?' The comic is amazing and work safe.
My story is not work safe. This story is "What if Horror does? How will the gang react?" A more detailed summary will be the first post, explaining the tags better.
Horror is the ONLY Main Character Death, and it is brief.If you don't want to read the sex scenes, I will post an edited chapter in a collection.
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- Part 1 of Hatchet
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dust has a bit of fun and hypnotizes horror for the first time
also my first time writing something like this so I apologize if the pacing feels a bit off
Series
- Part 8 of Mmm spicy
- Part 12 of are they really the bad guys if they're just hanging out?
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Birthday gift for DamnedXFate 2 by Chris_ghosty77 for damnedxfate
Fandoms: Undertale (Video Game)
22 Jun 2025
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Dream finds a gift from his brother after starting a peace treaty. It's a dildo, and Dream just can't seem to get it out of his head for some reason. It quickly becomes all he can think about.
Warnings are dub/non-con, incest, dildo, voyeurism, obsession, overstimulation, virginity kink and loss of virginity, creampie.Series
- Part 10 of Undertail hypnosis series
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Crescent's tired of being treated like shit.
All it takes is one comment to push him over the edge."God, just get up. I don't want to talk to a failure like you,"
How could someone be so cruel to their own son?
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Cresent por andar de mirón accidentalmente ve a su madre complacerse a sí mismo en la cama, ahora tendrá que lidiar con sus pensamientos sucios y más que nada... culposos...
"La tentación de algo que sabe que es inmoral retuerce su conciencia hasta que por fin seda a sus más oscuros deseos y anhelos"
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Edge has had enough of Stretch's tauntings about getting into everyone's pants and decides he's going to finally take matters into his own hands and seek out someone to break his virginity streak.
Series
- Part 1 of Edge and His Many Conquests
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All Dream wants is to be closer with Daddy, even though he’s getting older.
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Viper gets home from his shift at the Openverse bar and is excited to go shopping with Comet to get more clothes for them and Blade, but Comet has a little trick up his sleeve for his precious Wiggles throughout the trip. After a little bit of built up, Viper has had enough and tries to dominate the teasing skeleton, but doesn't get too far.
Viper and Comet belong to my friend T_Blue_Art on insta! Go follow them!
Fumiko belongs to me- Language:
- English
- Words:
- 4,715
- Chapters:
- 1/1
- Kudos:
- 2
- Hits:
- 36