1 - 20 of 24 Bookmarks by aculetun
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"WATCH WHAT HAPPENS WHEN I USE AN ATTACK I DON'T KNOW!!!"
Papyrus is hiding after abstent-mindly killing his mentor and former friend Undyne, who happens to be the head of the royal guard, making her death a huge deal. Luckily, Papyrus' best friend is there to console him!
(it displays zero words because it uses undertale textboxes, not normal text)
Bookmarked by aculetun
26 Sep 2026
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Monsters have been set free from the Underground and have been living in harmony with humans on the surface for 3 months now. Everyone seems to be happy, and enjoying each others company.
Except Flowey and Papyrus, who have been unable to reach other for the few months they've been free. Disturbed by Papyrus's sudden distance from him, Flowey is desperate to know why Papyrus has been ignoring him.
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Spamton has an unfortunate slip of the tongue at work and he can’t stop thinking about Tenna’s reaction. Many drinks deep that evening, the two of them find what they really want from each other.
- Language:
- English
- Words:
- 18,064
- Chapters:
- 3/3
- Comments:
- 156
- Kudos:
- 1,520
- Bookmarks:
- 153
- Hits:
- 21,570
Bookmarked by aculetun
03 Jun 2026
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After reconciling, Spamton and Tenna agree to give things one more go.
Bookmarked by aculetun
11 May 2026
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Speak a little louder, I'll even shout (aka: Mikeshots) by Nessiemay
Fandoms: Deltarune (Video Game)
13 Nov 2025
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Summary
Intentionally or not, Battat's defenses rose back up like clockwork, slotting into place as soon as they entered the studio’s halls. It came as naturally and instinctively as his switch into the Motormouth Mike persona in the presence of others.
And– not that he had any proof, of course– it was safe to assume that Mike was not in an intimate relationship with his cohorts.
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Small collection of smut one-shots! (Not as connected as the summary makes it seem. Maybe I'll make a better one later, idk)
Established polyamorous relationship, but these are focused on each pairing.
Chap 1: Battat/Pluey
Chap 2: Pluey/Jongler
Chap 3: Jongler/Battat
Chap 4: Some art I made!- Language:
- English
- Words:
- 11,496
- Chapters:
- 4/4
- Collections:
- 1
- Comments:
- 35
- Kudos:
- 470
- Bookmarks:
- 33
- Hits:
- 8,904
Bookmarked by aculetun
16 Apr 2026
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Summary
Based on this evil tumblr blurb i wrote:
Thinking about a robot who can make itself come, completely undetectable, getting off on simulations alone.
From the outside, it looks like it's idling. Thinking.
Being very professional.
Internally, it's running a simulation so vivid that it isn't even present. It's mentally there- having its circuitry teasingly blown on, its wires licked and nibbled. Its optics flicker just slightly as it perfectly models its CPU being tampered with.
And then it hard reboots. Lights die out, posture still rigid, servos locked.
It shudders once as it comes back online, then stands innocuously in the same spot. Like nothing had happened. It might even insist that this was normal— a standard practice for units with advanced predictive modeling.The following text is only slightly less horny. Enjoy.
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“Pay attention, mouse,” it purred, bringing him closer to its face. “That’s a command.” It stared at him, with its eyes half-lidded.
A low, droning hum started to fill the room, like the sound of bees swarming in a hive. It was surprisingly soothing.
Distantly, Battat realized that it was getting a little hard to think.
“Good,” it praised him, its voice a low rumble. He felt a warmness in his chest as its soft tone—he had done something right. “Doesn’t that sound nice? What does it make you think of?”
“Bees,” he said, the words leaving his lips before he could think about them. He blinked, trying to regain focus. “What’re you doing to me?” Battat asked, his voice sounding further away than he remembered it being.
Battat forgets his place. His friend helps him remember it.
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“Please. Spare us both the headache,” it sighed. As Battat just stared up at it for a moment without struggling, its grin widened slyly. “Oh? For all your yelling earlier, you’re being surprisingly… docile.”
So are you, he wanted to say.
With horror, Battat realized that this was turning him on. The heat in his gut was beginning to build again.
His gaze flickered away for a moment. It didn’t pass by unnoticed.
“Ah, there we go,” it purred, obviously pleased.
(Or, Battat is completely starved for intimacy, and it shows. FRIEND can't just stand on the sidelines and watch anymore. Battat hadn't known it had been watching in the first place.)
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Bookmarked by aculetun
08 Apr 2026
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“Turn around,” the voice drawled, low. He could feel its breath on his back. Battat couldn’t move.
“You’re hilarious,” it continued, laughing under its breath. It seemed to be closer to his ear, now, as Battat could viscerally feel the rumble of its voice. It almost felt like purring. “You’re more than happy to run yourself ragged, spend endless nights spinning in circles… You’ll even die, but you won’t turn around?”
Pretending to be someone is all fun and games until someone pretends to be you.
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Bookmarked by aculetun
08 Apr 2026
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“Oh, my dear… you’ve gotten yourself into quite a jam, haven’t you?” With a small snicker, it made sure that he knew it was there. It expected his head to snap up, perhaps quickly followed by a light flush, showing his embarrassment about being found in such a state.
Battat gave no indication that he had heard it. Instead, he stared ahead with half-lidded eyes, his breaths reduced to short, shallow gasps. His body jerked and he whimpered again at the involuntary movement.
Its gaze flickered down to the prop (which, on closer inspection, was just a steel pipe painted red). It quickly saw the issue.
It went straight through him.
To celebrate Valentine's Day, FRIEND plans a surprise for Battat. When it shows up, it gets one of its own.
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Tenna still hasn't been adopted, and he's feeling glooby in Castle Town. To make up for his past mistakes in TV World, Mike suggests him to host a holiday party for everyone. Pippins gets to spend a night of his dreams with his boss.
Bookmarked by aculetun
07 Apr 2026
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You strayed off the beaten path and have been presented with an unusual salesman who seems more than a little down on his luck.
After attempting a teasing flirt you realize maybe he deserves to be shown a better time than the one he's had.(A reader x Spamton fic, where you proposition him and realize he's had it rough so could use a better time.
No amab or afab assumptions here it's all hand work, and part two is oral on him
From a teasingly dominant perspective)Bookmarked by aculetun
02 Apr 2026
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There was a new kid in Middleground Youth Residential Treatment.
Or, Susie is angry and Kris is numb and despite all odds, they find each other before they were ever meant to.
- Language:
- English
- Words:
- 65,712
- Chapters:
- 10/10
- Comments:
- 361
- Kudos:
- 588
- Bookmarks:
- 134
- Hits:
- 11,026
Bookmarked by aculetun
25 Feb 2026
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Summary
Papyrus has always been one of the few characters that Flowey never fully understood
Even now that everyone is finally free, Flowey remains curious...Are there any skeletons inside his closet?
OF COURSE NOT! Just Papyrus sometimes.Or...
Papyrus WAS Gaster
The main story is set in the past, years before the events of Undertale, and it will explain what exactly led Gaster to shatter across time and space and how Papyrus came to be!
It will also fluctuate to the present in a post-pacifist timeline where Papyrus is figuring some stuff out.Series
- Part 1 of Forgettable-AU
Bookmarked by aculetun
22 Feb 2026
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- Language:
- English
- Words:
- 0
- Chapters:
- 5/7
- Comments:
- 1,083
- Kudos:
- 16,338
- Bookmarks:
- 2,371
- Hits:
- 219,645
Bookmarked by aculetun
11 Feb 2026
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Summary
It’s that time of year. The humans have brought out their flowery cards and flowery flowers and flowery meat-hearts, and are making flimsy romantic advances on prospective love-pigs.
At the very least, Zim can rest easy, knowing that no irken would ever engage in such pathetic displays of affection.Never. Never ever ever in a shmillion years never. Not even over their COLD UNFEELING ROBOT ARMs never. Ever! Never ever and ever and…
… hold that thought.Series
- Part 11 of Picking Poison
Bookmarked by aculetun
04 Sep 2024
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There’s no such thing as consequences when you’re stuck in a time loop.
Series
- Part 5 of Picking Poison
Bookmarked by aculetun
28 Jul 2024
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Summary
They carry each other, Skoodge would say.
Series
- Part 10 of Picking Poison
Bookmarked by aculetun
26 Jul 2024
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Bookmarked by aculetun
22 Jun 2024
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Summary
Five Irken Elites fail their examination and must endure detention together. They share their stories with each other and gain some new perspective on who they are.
Bookmarked by aculetun
06 Jun 2024