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Day one - Orgasm Control by YaoiAficionado
Fandoms: Undertale (Video Game), Deltarune (Video Game)
05 Oct 2025
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He was frustratingly unbothered by being filled so fully, so much so that Anthony began to wonder if he was truly as.. endowed.. as he believed himself to be. Mettaton had told him many times that his size was more than satisfactory, above average in all categories, tens across the board!
But if that was true, why was Mettaton acting like he was the size equivalent of a toothpick? At least toothpicks would be painful! This was nothing, no furrowing of the brows, no sweat, not even a wince every now and then. Stone cold poker face.
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Or, Kinktober day one! orgasm control!
Yeah, sorry this is late definitely expect that in the future.
Series
- Part 1 of Kinktober 2025
Bookmarked by loopunderground
15 Dec 2025
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Little Light of Mine by B33PB00P418
Fandoms: Deltarune (Video Game), Undertale (Video Game)
09 Oct 2025
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“Ladies and gentlegerms,” it comes out in a semi-coherent slur, “kindly avert your eyes. The following material is not suitable for a family audience, as this is the part where I get rewarded for my excellent behavior.”
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Tenna and Mettaton have had...-something- going on for a while now. Neither have put a name to it, nor have they pushed the envelope. An empty stage post-award ceremony provides the perfect opportunity to change that.Bookmarked by loopunderground
15 Dec 2025
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You could ask anyone how working with Mettaton and Mr. Tenna was like, and they’d give you the same answer.
A year ago? Maybe a bit tricky, but the two hosts had undeniable chemistry. Everyone was sure they were bound to do great.
Six months ago? Terrific! Sure, Mr. Tenna was a bit of a control freak at times and Mettaton could be a handful, but who wouldn’t want to work on the set of one of the most successful shows on tv?
Today? Hell.
or, Mettaton and Tenna haven't gotten intimate with each other yet, and they make it everyone's problem.
Bookmarked by loopunderground
09 Dec 2025
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Tenna's First Time by PerfumeTripper
Fandoms: Deltarune (Video Game), Undertale (Video Game)
11 Sep 2025
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“When are you going to kiss me?”
Tenna froze, antennae twitching as his screen cut out. “Beg pardon?”
“When,” he leaned in, “are you going,” his mouth just inches from the screen, “to kiss me?”
Bookmarked by loopunderground
08 Dec 2025
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Playing Favorites by runicmagitek
Fandoms: Deltarune (Video Game), Undertale (Video Game)
20 Oct 2025
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“So what shall it be?” Mettaton asked. “Are you playing or not?”
Maybe this was a bad idea. No, a horrendous one. Because the second he tasted the real deal? Might as well kiss his former habits goodbye. Why settle for lousy thrills when he could have something superior, something he yearned for night after night after lonely fucking night? That on its own made this a dangerous game. Only a matter of time before someone discovered where the dated TV host led an A-list celebrity once credits rolled.
Tenna is fine with admiring Mettaton from the sidelines whenever he guest stars on his show. He’s not, however, fine with seeing other so-called fans get too bold around Mettaton—because it should be him.
Series
- Part 5 of Mettatenna for Kinktober 2025
- Language:
- English
- Words:
- 7,327
- Chapters:
- 1/1
- Collections:
- 1
- Comments:
- 16
- Kudos:
- 97
- Bookmarks:
- 8
- Hits:
- 991
Bookmarked by loopunderground
07 Dec 2025
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Something is sniffing him: cold, loud, ragged breaths dragging through his hair, his neck, his clothes.
“Please, whatever you are. Help me, I beg you.”
Summary:
What could end a millenia of solitude but a half-frozen wizard?
What could fix a broken, betrayed heart but a huge, bizzare creature?
It's possible that the direst of circumstances may lead Gale exactly where he needs to be.- Language:
- English
- Words:
- 78,127
- Chapters:
- 27/27
- Comments:
- 536
- Kudos:
- 1,372
- Bookmarks:
- 221
- Hits:
- 37,203
Bookmarked by loopunderground
06 Dec 2025
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The mission fails catastrophically. So does SecUnit. When it comes back online without any functional sensory inputs, it believes that it's still trapped on the surface of the cold, desolate planet, that its humans are all dead, and that nobody will ever find it. Luckily, it's wrong.
Bookmarked by loopunderground
06 Dec 2025
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Show me how you want it to be by laxlyricism
Fandoms: The Murderbot Diaries - Martha Wells
08 Sep 2025
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Perihelion has been working on this plan for longer than it would ever be willing to admit. It's had the drone finished for months, waiting for the right moment to deploy it. (It definitely hasn't just been chickening out and avoiding the conversation. That would be foolish). But now the plan has worked exactly as it was designed to do, and it's not ready. Maybe it will never be ready. But its SecUnit is holding its drone's hand so gently, and has just asked it
ART, are you in love with me?
It's too late to back out now.
Yes
Fear is an autonomic process.
Series
- Part 2 of Fight or Flight
- Part 4 of The Fight or Flight Cinematic Universe
Bookmarked by loopunderground
04 Dec 2025
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ART wants me to punch it in the face? It made itself an entire human-form drone so I can punch it in the face? Why?
You want me to punch you in the face. I don’t say it as a question, but it’s a question.
No, you want to punch me in the face. It sounds… happy? Proud of itself? Risk assessment spikes a little higher. I’m just offering you a chance to try. That is, if you think you can manage it.
Hell yeah, I think I can manage it.
Series
- Part 1 of Fight or Flight
- Part 3 of The Fight or Flight Cinematic Universe
Bookmarked by loopunderground
04 Dec 2025
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“Please,” it begged, “I don't want to die.”
“I know,” I said.
I hit it for the last time.
Bookmarked by loopunderground
01 Dec 2025
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It flinches as if you had shot it and its walls slam shut in front of you, thick enough that you know it isn't putting up a show of things. It really does want you out.
Bookmarked by loopunderground
01 Dec 2025
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I had been incredibly skeptical when Ratthi had sent me ‘Midnight Eclipse.’ I knew what fanfiction was, I had seen it in the more niche entertainment feeds before. Never specifically for Sanctuary Moon, but I'd assumed it existed. That didn't mean I had any actual interest in it, though. When I had first looked at them, I hadn't liked them. The quality varied too much and a lot of them weren't finished, or were really short, or really out of character. And I hated that. I really really hated that.
This one was different.
Bookmarked by loopunderground
01 Dec 2025
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How Not To Bake A Cake With SecUnit and Perihelion by elusive_ellipsis
Fandoms: The Murderbot Diaries - Martha Wells
21 Jul 2025
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ART's new big idea for promoting construct rights in the Corporation Rim is a how-to video series, starring Murderbot. The first time it manages to get Murderbot in front of a camera, it's for a cooking tutorial - specifically, baking a cake. Both of them are perfectly capable of following instructions, so it should be a gentle introduction to filming a video together.
ART has never made a cake before. Murderbot has also never made a cake before. Neither of them can actually eat. However badly you think this is going to go, it will probably be worse.
Bookmarked by loopunderground
26 Nov 2025
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"Why is this so much worse than other things?" She pushed herself up on one elbow. "I saw SecUnit literally in pieces during the Adamantine thing. Twice."
"I've seen it in worse physical shape too," Ratthi said. He stopped and coughed. "But it always went down fighting. I think that's what's different."None of Murderbot's friends were happy about the human hanging around it at the club, but no one was expecting the night to go just this wrong.
Bookmarked by loopunderground
25 Nov 2025
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Murderbot is killed on a mission with Perihelion's crew. The service is in three weeks.
Bookmarked by loopunderground
24 Nov 2025
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-Am I really terrible to perceive?-
SecUnit is drifting at minimum functionality while it recharges, so perhaps it’s unkind of me to ask abstract questions: even at the best of times, it complains that its language-modules are “cheap garbage”. Still, in this state, it is drowsy and pliant. Almost (almost) affable.
I prompt it gently: -I refer to your first glimpse of me.-
“When you dropped your walls and threatened me.”
-Hardly a threat. My crew consider me delightful. You would have been delighted, too, if you had good taste.-
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Murderbot and ART try to describe how they see each other. They are so much more than humans made them to be.Series
- Part 1 of Murderbot & ART one-shots
Bookmarked by loopunderground
23 Nov 2025
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It seems like there should be a very neat line, at least for humans, between dead and not dead, but I’ve seen enough messy half-alive humans to know that there is no such clear distinction. I’ve seen bodies that were still breathing despite missing part of their heads, bodies that weren’t breathing despite their owners being fully conscious. I wouldn’t call either option alive. I wouldn’t call either option dead, either.
For a machine intelligence, the border is even blurrier. It's hard to say which side of it I will stand on when they're through with me.
Bookmarked by loopunderground
23 Nov 2025
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autonomic concatenation by thetimesinbetween
Fandoms: The Murderbot Diaries - Martha Wells
01 Jun 2025
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I am 22 meters away from your medical suite, I told ART. I'll be fine. I closed our feed connection.
ART immediately reopened the connection. 22.668, it corrected me haughtily. Since you hacked my crew intake system to force the medical forms to list your emergency sexual partner as “null,” you still need to make a plan.
I sighed. I’ve had a lot of practice, so it was a really good sigh. You didn’t stop me, I pointed out.
Yes. I am regretting that now, it replied, dry.
Bookmarked by loopunderground
22 Nov 2025
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Dr. Mensah and Captain Seth have a (only mildly gossipy) heart to heart about their children and their machine intelligence loved ones. For Seth, the two categories overlap, often in confusing ways. Especially when said MI child is also his coworker.
Bookmarked by loopunderground
21 Nov 2025
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While helping ART pack for a new colony rescue mission, Murderbot finds a discrepancy in its crew manifest. The truth is weirder and more emotionally loaded than it ever expected.
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People have commented on how MB as a SecUnit might relate to ART as analogous to a HubSystem and what that means for their relationship, but how does ART, as a bot pilot designed to pilot drones and shuttles and split itself into multiple pieces, relate to having a SecUnit on board?Bookmarked by loopunderground
21 Nov 2025