The sensation of Frisk riding his dick and cumming so hard they nearly blacked out was certainly distracting, but Sans persevered. It didn’t take long to realize what happened.

It worked.

It actually worked.

He… was honestly almost resentful of that, because really, of all the timelines, it had to be that one? He’d been so angry, so frustrated, so bitter, so convinced of his own end…

… it was also an extremely pleasurable memory. So there was that. And while he was still a little upset at what they’d done, he couldn’t argue with the results.

He moved with Frisk, just enjoying this experience while they recovered from their orgasm. Once they seemed to regain the capacity for thought, he spoke.

“hey frisk,” he said with a grin. “your boneheaded idea worked.”

They locked up, staring at him in wide-eyed shock. He continued to thrust into them - it felt really good, after all, and his desire had been completely restored.

“It… it worked…?” they asked, dumbfounded. “It really… you remember? You actually… you really remember, Sans?”

“yeah,” he said, and a choked sound came from them.

He meant to poke them about the bullshit they’d pulled, but their reaction silenced him. They fell on him desperately, riding him with consummate skill, kissing at his face with mad intensity, tears falling from their face, which was lit up with wild joy.

“You remember,” they said, their voice almost a sob as they moved on him. “You… you’ll stay, no matter what happens with resets, you’ll always stay, it’ll always be you, Sans. You are forever…”

It was kinda hard to stay mad at them about the whole Papyrus bullshit when they were being like this.

“we don’t know if it worked fully yet,” he pointed out, and their expression transformed.

A surge of honest-to-goodness fear filled him at the blazing determination that took over their face. Their eyes drilled like lasers as they moved on him with a focused will. When they spoke, their voice was resolute, as though their words were commands to the very structure of reality itself.

“We’ll do it again,” they said, moving on him in maddening ways. “You will fill me beyond capacity, and I shall sacrifice to you my soul with each thrust. You will forge the connection, and when you orgasm, you will kill me.”

“i… uh…” he tried to say, but trailed off.

He was trying to say that he really didn’t want to kill them, but that look in their eyes was, uh…

“You will,” they said, their eyes blazing as though reality itself had dare not argue. “I will not lose you, Sans. We will repeat this trial and we will make sure it works.”

“i was really pissed at you and i dunno if i can just do all that again,” he said quickly.

There was a faint wince that crossed over their face, but it was lost in the raging inferno of will. It didn't slow down their movements on his dick, either.

“Do you want me to make you angry again?” they asked, their eyes terrifyingly intense. “I expect I can.”

“no,” he said immediately.

Fuck no. He absolutely did not want Frisk to try to piss him off, he didn’t even want to think about what they might do.

Not that he could actually think when they were moving on him like this.

“Then we’ll make do without that variable,” they said. “Everything else, Sans. You must.”

They closed their eyes, letting him escape the intensity for a moment.

“I won’t lose you,” they said in a low voice.

Did they want him to remember even more than he did? It really seemed like they might. He was sure he could oppose them if he had to. He was sure he could knock them out of this headspace with a well chosen order.

But… but maybe just going along with this was best? He did want to remember, and doing it twice wasn't really any worse than doing it once, right?

Still. There was one problem that he couldn’t help but be extremely aware of with the way they were moving.

“one… one issue,” he managed, and their eyes opened, their gaze stabbing into him again. “i, uh, was able to resist, uh, finishing things because of how pissed i was… but…”

“You’re worried you’re going to cum too soon?” they asked with a grin and he nodded.

They tilted their face up to the ceiling and laughed.

It was not an especially sane laugh.

Something about that laugh made his brain catch up to the extremely obvious situation he was in. In a rather important way, it wasn’t Frisk he was with right now.

The nightmare of world-ending power brought its gaze back to him, burning him with the depths of its insanity. It moved with exquisite mastery on his body and looked at him with an expression of untouchable confidence.

He… had very mixed feelings about this, but it still felt too damned good to think.

Also he kinda felt a little extra bad for the genocide route Sans, because holy fuck, Frisk could be terrifying.

“I have a confession to make, Sans,” Frisk said with a throaty tone, still piercing him.

Uh…

“I may have indulged a little bit today,” they said with a soft moan. “I may have dedicated a few… dozen… loops to having a little fun and learning a few little tidbits.”

They laughed as they leaned over him, grinning in a predatory way that, again, gave him some very mixed feelings. Wasn’t he supposed to be the one in charge, here?

“You handle the magic,” they purred, still grinning in a way that was both somehow hot and terrifying. “I will decide when you cum.”

Maybe his life would be easier if he just went along with this?

Frisk really seemed to have a handle on this whole thing, he could just… let them run the show for a bit, that was fine.

He had a flash of sympathetic pity and fear for the next Sans if this didn’t work, and Sans didn’t remember. Poor guy. Hopefully he wouldn’t exist in the first place.

“Now,” they said, fixing him with a sharp look. “I need you a little larger to easily draw you into my soul.”

He didn’t think he could just let his dick get to the full instability as before. It had kind of been the result of him breaking from overwhelming… everything. But that probably wasn’t critical. He let his magic flow and swelled within them - tight, but not so much that they couldn’t manage to ride him, if only just. And bottoming out with just a few inches spare, rather than nearly half a foot.

As they slid down on him, he slid into their soul, immersed in their vitality again. It felt so goddamned good and he felt his control start to slip as he gripped their sides.

“Now make the connection,” they said.

He tried, but it was hard to let himself go. This was feeling absolutely incredible, but a lot of thoughts were pulling him away.

“Good,” they said. “But you’re thinking too much. Let’s fix that, shall we?”

The grin they gave him was once again not helping him thiiiinnnnkkk… what the hell were they…

He groaned as they moved faster on him, driving him to the brink, there was no way he wouldn’t…

Right as he was about to lose control, their spirit shifted and ejected him. But, he wasn’t just pushed out of the phased-in part of their flesh. It was like a faint barrier was holding him back from the walls of their pussy. And, worse, the faint barrier was slightly numbing.

It wasn’t really anything they hadn’t already done - they were just pushing the sensation of the very surface of their spirit, as it overlay their skin, to have a numbing and repulsion effect, just like they’d changed the sensation of their spirit when touching his core before. But this was… uh… targetted and refined.

He realized with a sensation almost like horror that if they did that, he couldn’t cum even if he wanted to.

Just as he started to pull from the edge, the barrier withdrew and he felt the full pressure of their tight pussy.

The torment began in earnest. He would slide into their soul, absorbing a measure of their strength, he would be crushed and squeezed by their wet heat, their body moving with exquisite perfection, combined with their body rejecting him and forcibly numbing him so that he couldn’t cum, even when he lost control.

It wasn’t long before he couldn’t even comprehend trying to be in control.

They could clearly feel the connection and tried to strengthen it on their side. They moved in rewarding, pleasurable ways when his emotional walls cracked. They were distracting when his walls thickened, a surge of varied sensations that distracted him from any hope of thought. He found himself being dragged into relaxing and letting them feel him, like a goddamned dog being trained.

The connection did grow quite strong, in the end. Not as strong as it had been in the previous loop, but still potent. And their… insane determination seemed to have settled down, returning the Frisk he knew and loved.

And as they rode him in a way that was not quite driving him to distraction, letting him soak in the sensation for a moment, he realized something.

What he felt in them… a sense of stability, of contentment, of a deeply rooted satisfaction… he realized it was their devotion to him that he was seeing. It was a thing of joy, not of constraint. They weren’t his slave, exactly; he was their god, whom they loved and worshipped. That wasn’t quite right, either, but the closest his frazzled mind could come up with.

They’d been saying all along that this was a good thing, and that it’d become a core part of their soul, and he hadn’t believed them. Hadn’t understood.

As he gazed up at their sweaty face, at the soft smile they were giving him, he realized that… as messed up as they were… they were okay.

A last wall in his own heart loosened, feeling that. A mirrored sort of contentment filled him. If they were okay, if this wasn’t wrong, then there was nothing to hold him back, was there?

“There it is,” Frisk said, panting a little and smiling at him. “The last piece. That’s the strongest I’ve learned how to make the connection.”

He laughed a little at that. It hadn’t just been an indulgence - they’d been trying to make him remember with those loops, and while they were obviously having fun doing so…

He reached up and pulled them down by their arms into a tight hug. They squeezed him back and trembled a little.

“thank you,” he said into their ear as he continued to thrust into them, since this position didn’t really let them move.

“I don’t want to lose you,” they said with a little whimper in their voice.

He went ahead and summoned a blaster. They looked at it and giggled, which made their pussy clench in interesting ways.

“i’m not going anywhere,” he said. “c’mon, i’ve got an insane time traveller to kill. let’s do this.”

They laughed again, and fell to kissing at his face, tears filling their smiling eyes. They reached out and grabbed a piece of pie, consuming it quickly. Then they started riding him in earnest again, letting him fill them completely, and he groaned as their strength flowed into him.

“I’ll let you cum, now, whenever you’re ready,” they said.

After all of the insanely ridiculous nonsense they’d put his poor dick through, it wouldn’t take much.

Still, he resisted, trying to let the pleasure build up as powerfully as possible. He let himself go, as completely as possible. He gave them everything and felt them give everything in turn.

And in the end, it turns out that if pleasure is incomprehensibly intense, it’s also hard to compare. Save for the sorrow of that first loop, which had no place in his heart now. So, beyond that, who’s to say which loop ended on a higher note?

Hardly mattered, since when his desire and stamina were once again restored, he remembered both.

It was working.

And damn, was this a good moment to return to.

It turned out he was pretty persuadable when he had someone sexy riding his dick and repeatedly blowing his mind with levels of pleasure that he’d previously never imagined existed. Who’d have guessed?

It resulted in another five loops of repeating what they’d done, which Frisk insisted was “being thorough” and not “being addicted to that level of pleasure.” He had his doubts, but well… he’d been persuaded somehow.

His mind was reeling in the background, though. Something about actually experiencing this made it real in a way it never had been. He’d known that Frisk’s energy was fully restored with every loop - even mental energy to an extent, as their physical brain was refreshed - but living it was something else.

He could exhaust himself as much as he wanted, pour out magic to whatever extent he felt like it, and it was all back. He could physically wear himself out by pounding them without any restraint, and went back to being completely fresh. He hadn’t pushed himself at all, save a little magical fatigue, by the time they’d saved. So he had a lot of strength and stamina, of all types, to work with.

This content has been unlawfully taken from Royal Road; report any instances of this story if found elsewhere.

He could drive himself to his limits, cumming inside of them and feeling absolute, full body satisfaction, and go back to feeling fresh and full of lust, ready to do it all again.

And he finally, finally understood them about the whole death thing. He finally understood how trivial it was. How a masochist who loved the feeling of his magic inside them would legitimately enjoy that approach to resets. Because it wasn’t death, it really wasn’t - it was just a way to trigger resets that Frisk liked but made others uncomfortable.

It just meant that both he and Frisk had the power to make time reset. They did it by choosing to; he did it by killing Frisk.

And as they died again on his dick, as he came inside and blasted them on a few levels, their life pouring through his dick to flood his existence with power, vitality, and mind-breakingly intense pleasure… a part of his mind increasingly grew to accept that this was just how reality was, now. That this pleasure was his, forever, whenever he wanted it.

Still, he wanted more than just to repeat the same thing forever. Even if it was extremely compelling.

He told Frisk that they should start backing off, and trying fewer things, to make sure the memories were stable. The first thing he tried was to stop forming the emotional connection, since that hadn’t seemed to really help in the first place. They were disappointed at no longer feeling it - privately, Sans had to admit, he felt the same.

Then, with a far more begrudging feeling, he stopped making his dick oversized and stopped phasing it into them. They both were really struggling with that one. He really had gotten addicted to the feeling of taking their soul that way.

It had gotten to the point that he’d begun making it oversized from the instant the loop restarted, and they were so used to whatever weird thing they did to make the phasing thing happen that they could do it even during that first, overwhelming orgasm. Stopping that was legitimately difficult for them both. He just… he didn’t want to.

It was weird to realize, actually, as they rode his dick in a humanly possible way, with the usual level of sensations of excellent sex, giving him mental space to think a little. He’d objected to them doing that in the first place. He’d gotten mad at them for wanting to do that. Well, frustrated and annoyed, really. And why? Because it could slightly and temporarily hurt an immortal being in a way that could be easily handled by every single remedy they had? When that being was also a masochist?

Why had he been so bothered by killing them? They were immortal.

The worst part about killing them now, he thought to himself as he came and blasted them again, was that without either the emotional connection or the phased in dick, their life and pleasure didn’t flood into him. It felt like a waste.

But their death spasms on his dick felt nice, at least.

“this time, let’s not do anything special, and then reload without dying,” he said, as soon as they regained the ability to think after their initial orgasm.

They sighed a little at that and he laughed.

They could just reload now, without him finishing inside, but… well, he didn’t want them to. He started off feeling pretty intense desire, after all, and why not do something about that?

What with this being kinda regular sex at this point, he had some fun with different positions. He found that they were extremely skilled at riding him, but significantly less so in other positions, though of course they could still shift their defenses in ridiculous ways.

Things were less intense without that phasing trick, but it was still a good time. Even without the connection, he preferred holding out until they came, because it felt so good to cum together.

Even if it was just a normal orgasm that stayed contained in his dick, he still groaned with satisfaction. He fell to his back and pulled them to his chest, pulling up the blankets while he was at it. They might want to use the mental break to talk a little.

“Should I reload right away?” Frisk asked.

“no,” Sans said, amused. “let’s take a moment.”

“It’s so weird, not having you inside me,” Frisk said, squirming a little. “It feels wrong, like I’m incomplete.”

He laughed at that. It'd probably been close to an hour straight of being inside them for him… how long had they been riding him for, in the loops before he remembered?

“it does feel damned good,” he said.

“Yeah, it does,” they said with a dreamy smile. “All of this has been so wonderful, Sans.”

“it’s been sans-sational,” he said with a grin.

They started giggling at that, way harder than the joke deserved, and their eyes watered, almost overflowing. They wiped at their eyes and smiled at him with a surprisingly intense expression of love and appreciation.

“In the first loop, when we finished together, you made the same joke,” they said a moment later. “It’s sad you don’t remember that loop… it was a really sweet one.”

He hugged them close.

“at least we don’t have to worry about that anymore,” he said.

“But what if it doesn’t work…?” they said.

“why wouldn’t it?” he asked. “the only thing we did last loop was me killing you, without any of the magic connection stuff. i’m pretty damned confident that it was permanent from the first time you pissed me off and i remembered.”

They winced at that.

“I’m sorry for pissing you off,” they mumbled.

“can’t argue with the results,” he said with a shrug. “couldn’t even get on your case about it, from how happy and then… uh… determined you were about the memory thing.”

“I guess that’s good,” they said, still seeming awkward. “I won’t do that again, though. I really shouldn’t have in the first place…”

“but it worked, cut yourself some slack,” he said.

They squirmed uncomfortably.

“I don’t want to hide anything from you,” they said in a small voice.

“oh?” he asked.

“I don’t want to confess, but I…” they said, their voice trembling.

“tell me,” he said with a small smile.

Whatever it was, they obviously felt like they should tell him. From what he’d observed these last months, especially combined with what he’d seen of their soul - just giving the order would call on that stability and ease their tension. As predicted, their trembling settled, though they were still uncomfortable.

“I didn’t think it would work,” they admitted, swallowing. “It’s just that I’d gotten off to the idea of you killing me before, and I -”

“wait, before today, you’d gotten off to the idea of me killing you?” he asked, amused.

They squeaked and nodded, burying their face into the blankets on his chest.

“no wonder you were hesitant to tell me the extent of your masochism,” he said and they nodded. “anyway, you were saying?”

“I… I only said it because I believed you wouldn’t remember,” they confessed, their face bright red. “There’s no way I would have had the courage otherwise.”

“that’s hilarious,” he said with a laugh. The irony was fantastic. “so you wanted to live out your fantasy of getting killed by me during sex, used the hope for the memories as an excuse, and said something that you knew was fucked up in order to get what you wanted. you did it with the expectation that it wouldn’t work, so you could have what you wanted consequence free.”

That got them trembling again, with guilt and shame.

“Y-yes, Sans,” they admitted, sounding like they were on the edge of tears. “I’m… I’m sorry… I wasn’t really thinking, but when you put it that way… god, I can’t believe I…”

“hey, it’s alright,” he said, squeezing them in another hug. “honest. one, it worked, so i’m glad you did it. two, if i’m right and i’m fully in the loop now, then that situation can’t even come up again. three, i also know what it’s like to be distracted and to fall to temptation. and four, i understand you better now. you couldn’t have gotten me to understand the killing you thing then.”

“You understand it now?” they asked, glancing up at him.

“probably not completely,” he said. “and i sure as hell don’t want it for myself. but i better get that, for an immortal, it’s just an intense experience, not really death. and you’re very into intense experiences.”

They smiled, still a little sheepish, but with more warmth.

“That’s true,” they said and sighed happily. “Today has been incredible.”

“yeah,” he agreed softly.

“I… don’t really want it to be over,” they admitted.

Sans didn’t either. The memory alone…

“when you reload, it’s not like i’m just gonna leave you hanging,” he said. “so there’s at least a little more ‘coming.’”

They giggled.

“You’d only committed to the once, to today,” they said. “But… I mean, you know I’m up for future things, too. Do you… do you think it’ll only be today?”

He sighed. Even now, even fully sated - okay, it’d been a few minutes and those memories were really compelling, so maybe not fully sated anymore - he didn’t want to turn away from this. He wanted to have Frisk, sexually and otherwise. He wanted to fully accept them and just have this be his life. Sans, with his pet world-ending immortal who gave the best blowjobs, among other things.

But he also knew that he was still kinda in the moment and he had a lot to think about. There were reasons he’d been opposed to all this, and the fact that he couldn’t really remember those reasons was not a good sign that he was properly thinking things through.

“i’m still too… uh… close to those memories to really think things through,” he said and they grinned at him. “right now, it seems like a great idea to just have you whenever the hell i want.”

Their grin widened.

“i dunno what i’ll think when i’ve had a chance to really think, though,” he said and they nodded. “who knows. i may go back to thinking this is all awful and wrong and i shouldn’t do this.”

“I hope not,” they said, snuggling closer.

“same,” he admitted, and they let out a happy noise.

“So… so this might be the only time we ever…” they said, and he nodded sadly.

He really, really hoped that he’d conclude that this was good, because he never wanted to let them go. But he couldn’t think clearly, not with those memories burning in his mind, not with Frisk beside him, not with the knowledge that with a single little summon and release of magic, they’d be cumming on his dick again, with all his desire restored…

He wouldn’t even have to say a word to make it happen.

He started to get hard again and he knew it wouldn’t be long before he had them reset.

“If that’s the case,” they said, “And… and right now, neither of us want it to be over… maybe we could… maybe take advantage a little?”

“what do you have in mind?” he asked.

The not-horny him would probably be disapproving, but that Sans wasn’t around, so too bad.

“Just… just in case you decide not to do this again, maybe we could make sure there’s nothing that we regret not doing,” they said, squirming a little.

“what is it you wanted to do?” he asked with a grin.

They blushed.

“I… honestly, the main thing, is I really want to feel like you’ve taken me at least once because you want to, not because of the memory thing,” they said. “I know that that line’s a little blurry anyway, I know you were driven by desire, and I felt, uh, quite a bit of lust. But… but the idea of continuing to have sex with me even after your memories are in place? Where there’s no reason at all, except desire? I… I want that.”

With infinite options on the table, they wanted to be wanted. And he could read between the lines - they wanted intimacy and closeness with him. Damn these warm fuzzies.

He hugged them close again.

“i can do that,” he said in a low tone.

“What about you?” they asked. “Anything you’d want to try?”

A number of fun ideas ran through his head and his grin slowly widened.

“a few things,” he said and chuckled a little. “and some of those things… it’s stuff that i absolutely would need to ask about ahead of time. it’d be incredibly wrong to just do them by surprise. a bit curious about your thoughts on the topic.”

“Do it,” they said, their eyes burning bright. “Do it all. Don’t ask, just do what you want to me. Anything you want to me. Just a blanket permission, for all things ever, no matter when or where.”

He laughed.

“i figured you’d say something like that, but seriously, frisk, there’s gonna be things you actually don’t want me to do,” he said.

They looked thoughtful.

“I know you don’t want me to actually suffer,” they said and he nodded. “I know you want me to enjoy myself, even if you like it when I’m whining.”

He chuckled a bit at that.

“So I’m fully aware that, if I pretend to enjoy something and you later find out that I was only pretending - or worse, that I was hiding things from you on a longer term basis - it would be way worse than the disappointment that I don’t share whatever random kink it was,” they said, and he nodded again.

The look they gave him now was oddly fond and loving, considering the explicitly sexual nature of the topic.

“I want to be real with you,” they said. “You saw on my face, the embarrassment squashing my lust, with the whole ‘daddy’ thing. You’ll see how I feel about things. And I trust you. If you see that I’m legitimately not enjoying something, why should I withdraw consent when I know you’d stop anyway?”

That was a backwards way of looking at it, but he had to admit they had a point.

“And if I think you’re somehow not seeing it on my face, that I’m not enjoying something, I’ll tell you,” they said. “But the whole ‘daddy’ thing was hilarious, the way you used it to mess with me, even though it was so awful and embarrassing. I don’t want to take away tools from you, even tools that I don’t personally directly enjoy. I’d rather trust you with them. So I want you to have blanket consent for everything.”

“you were protesting a little, when i was having fun with my tongue,” he said and they laughed. “i was pretty sure you were protesting the teasing because you wanted to cum, and not what i was actually doing. but from what you’re saying… it sounds more broad than that. that even if you’re protesting what i’m doing, you want me to trust my own judgement, not necessarily listen to you.”

“Yes,” they said, squirming a little. “Absolutely, completely yes.”

“even if you’re saying no, if i don’t think you actually mean it…” he said.

“Yes,” they whispered, biting their lip. “If I really mean it, it’ll be clear.”

“i’m not perfect,” he said - understatement of a lifetime, that. “with that kind of… i could easily see myself falling to temptations, pushing you way too hard, going too far.”

Their eyes shone and they squirmed.

“I want to experience that at least once,” they said. “Being pushed too hard, being taken too far. If ever I really can’t handle things, I will tell you. Kinda felt that way a little with the bullshit you pulled with your tongue, not gonna lie.”

He cracked up at that and they gave him a grin that was torn with wry amusement and playful accusation.

“that was fun,” he said with a grin. “i’ll never forget the look on your face.”

They harumphed at him, and then they both laughed.

“i’ll trust you,” Sans said, stroking a hand through their hair. “i’ll trust that you’ll let me know if ever anything’s actually too much, and otherwise…”

Their eyes were glinting with delight.

“I’m glad,” they said. “Should I go ahead and reload?”

He was feeling like… maybe not quite yet.

He pulled them close, pressing his face against theirs, cheek to cheek, as though he were about to whisper into their ear. Frisk didn’t have pseudoflesh that could overlap with his, that could share in intimacies the way his kind could. Still, even if the end result wasn’t the same, the gesture pulled forward a lot of the same emotions.

Apparently, they felt similarly, as they turned and kissed lovingly at his cheek.

“you’ll reload,” he said. “and then i’m going to take you because i want to. each time i kill you, it’ll be because i want you to reset, because i want to do it again.”

They were trembling with desire as he held them.

So strange, to have gone from being deeply opposed to killing them during sex, to using it as a way to indicate he was ready to reload, and all it’d taken was a half dozen times killing them in the midst of an orgasm so intense the memory still couldn’t be fully touched from how overpowering it was.

Though maybe that was sufficient reason, come to think of it.

Eh, he’d think about that later.

“and i don’t want you to be afraid,” he said, stroking their hair again as he spoke. “i want you to feel like you can do things, try things, say things. i want you to be you. your real reactions, desires, everything, while i take what i want from you.”

They were breathing hard now and squirming in a distracting way. He was tempted to take them now, before reloading, but he loved how intensely powerful that first orgasm of theirs was, how much more desperate their need was.

Come to think of it…

He grinned as he felt them squirm.

He idly wondered if he could make them rescind that blanket permission. Part of him really wanted to try to find out.

“i’m going to use you until i’ve had my fill,” he murmured and they moaned, their eyes shining with increasingly wild need. “if you think you can handle that.”

“God, yes, Sans, please,” they whispered and he couldn’t help but laugh.

“heh heh heh. welp, it’s that time, isn’t it? let’s do this.”