In the omega Timeline, all was going as normal. Happiness reigns over the timeline, along pacifism.
But then, a glitch portal opens. Many residents notice, including Core Frisk. It was different from what they saw so far as portals are, mainly Ink and Dream.
From it, UltSans appeared, and instantly, all was genocide. Everyone started dying with ease, but after a short moment, Core tried to stop him, but he instantly made bones pierce Core, but Core then started glitching, and then disappeared.
UltSans hesitated, wondering what just happened.
UltSans: "... What...?... Meh."
But he quickly went back to kill everyone in the Omega Timeline.
Core Frisk appeared back at the void, aside Gaster and Chara.
Meanwhile, back at the Omgela Timeline, UltSans was massacring with ease everyone. Some were stronger, as Last Breath, Dustrust, and other variations. But all were defeated or quickly, or with ease.
The Last Breath variations were the one who lasted longer, as capable of Gaster's help, but even with that, UltSans alwasy stroke with surgical precision to finish them with ease.
After a short moment, Core came back, only reaching to bother UltSans, failing to make a difference to save anyone.
After a big while, everyone was killed, and everything destroyed.
Core remained hesitant, until then they fell to their knees and cried.
UltSans: "I don't know what you are, but you're impossible to kill. But well, keep breaking, crystal ghost."
UltSans then walked to leave, Ink suddenly appeared, saludating friendly, but then notices the scene, but is also attacked by UltSans.
Both then start fighting, and Core leaves to call for help to Dream and Swap.
As Core went for help, Ink was already in huge trouble, as was barely able to handle UltSans.
Ink had to open portals to other AUs and Timelines, but anything that went through any portal, was simply killed almost instantly.
But after a moment, as UltSans is distracted killing, Dream and Swap appear and place aside Ink. Then, after a short moment, the portals closed, and UltSans hesitated as there was no one more coming to be killed, so he turned and stared at the three.
They then fought, but unlike the Bad Sanses, UltSans was really going for the kill, easily overwhelming Swap and Ink, while the negativity from UltSans was already enough to make Dream not even useful.
After a while of the battle, in a sudden, UltSans moved his arms to his chest, and then, roared. All his chest was suddenly exposed, the rib cage and bones sharp and exposed, and his expression sharp and melted with a sinister genocidal grin, and the roar itself was glitchy and distorted.
In the next second, he stopped roaring, and was as if he didn't roar, and instantly launched to attack Ink. But Core got in between, saving Ink.
Core came back over and over, trying to be really bothering to not let UltSans kill anyone else, but couldn't do anything at all.
And after a moment, a glitch portal opened behind UltSans while he tried to make Core stop hanging of their grip on his left arm, and Swap got the chance and made UltSans tremble and fall back, making him along Core go through the glitchy portal.
The portal then closed behind both. Swap and Ink were exhausted, and Swap dropped down while gasping.
In the other side, UltSans threw Core away.
UltSans: "How fucking annoying can you be?!"
Core Frisk: "I won't let you hurt my friends! And if that means being a shield for them, I will be!"
UltSans: "Oh, sure! 'Friends'... A cover name to hide intentions of using a random who you don't really know for benefits. Come on, thing! Do you really think any of those skeletons are your friend? The yellow one? The cyan one? Or the one wearing dark brown robes?"
UltSans then walked around, and sat in a chair around the circular table.
Core hesitated, and walked closer to him, taking a seat aside.
UltSans: "What do you want now? Didn't you had enough breaking my balls?"
Core: "Why are you so... Offensive?"
UltSans: "What do you mean?"
Core: "Your language, tone, behaviour... Your way of expressing yourself... You're very aggresive, and mainly offensive. And vulgar."
UltSans: "Pfft. Yeah, sure, thing. Who the fuck cares, anyway?"
Core: "That's one of the points I mean. You're vulgar while talking."
UltSans: "And? What are you, a chinese copy of Family Friend censorship or something? I ain't family friendly, thing. So if you expect nice things, keep waiting."
Core hesitated, and ultSans suddenly grabbed from thin air a glass with pink liquid, and started drinking it.
Core: "What are you drinking?"
UltSans: "This? Is wine."
Core: "... Do you like wine?"
UltSans: "Meh, not really, just this one, but is just for the taste. I'm not for alcohol-..."
UltSans hesitated, and then slowly turned his view to look at Core.
UltSans: "Why the fuck am I even talking to YOU?!"
UltSans then turned to the opposite direction, and drank the glass.
Core: "Maybe because you just want to be heard?"
UltSans then stopped, hesitated, and then closed his right hand, shattering the glass, but it then dissapeared after he swong his right hand and fingers.
UltSans: "Shut the fuck up, thing. You're a very strange white and black doll, you knew that?"
Core: "I'm not a doll. I'm Frisk."
UltSans hesitated, and then turned around. His expression firm and serious.
UltSans: "... You're not Frisk. So take that in your head, thing. You're just a little fucking annoying ghost."
Core hesitated, holding to cry as could, but crying slightly.
Core: "But my name is Frisk... Why have you... To be this mean?"
UltSans: "Sure, sure... Listen, little bitch. You're as annoying as fuck, and I don't give a fuck about you, or your shitty friends. Now, what the fuck you want to annoy me so much?"
Core: "Why you talk like that? They are my friends, you like it or not, they are."
UltSans then ignored Core, and Core grabbed his right should and dragged him towards them.
Core: "Why you have to be this rude and mean? I don't see the point."
UltSans: "No reason. Just that."
Core: "What do you mean? There is always a reason."
UltSans: "Well, what if there isn't? Huh?? Not everything is done after something, thing!"
There was a silence for a short moment.
Core: "I don't understand why you have to be so rude to everyone and everything. Even doing what you did in the Omega Timeline, but... I know you can stop that."
UltSans then turned a little to look at Core, and then, Core hugged him from behind, taking him off guard, but even yet he didn't denied to move away from beign grabbed, nor hugged.
Core: "As Ink told me, what is being shown in the drawing, is just the outside, but the inside can be anything. And I know you can be a good person."
UltSans hesitated, his expression of being surprised with wide open eyes. For a short moment, he remained untouched, but deep, he was starting to go crying, so he closed his eyes before possibly start to.
Then, he quickly moved up, grabbed Core, turned around to the opposite direction he was, and thre Core again. Core broke through a door, and crashed against the ground multiple times before remaining down.
UltSans then teleported to be in front of Core.
UltSans: "Well... Now I'll have to fix that... Oh, well. Now at least I have a reason to do redecoration."
Core slowly turned to look up at him, while he stared at Core.
UltSans: "And for you... That's enough of dealing with-"
His expression then suddenly changed to a hurted one, as if something very painful was hurting him. His expression was firm adn rigid, as if getting furious, and his eyes closed firmly. It only went more and more, until he moved his right hand to the left side of his chest.
UltSans(Whispering): "Fuck... Why, every fucking, time... Stupid glass shit hate armor... It doesn't last at all... The real 'Dude doesn't last at all'..."
Core hesitated, but quickly, with their omnipotence, understood it all. Core knew since a while ago, they couldn't leave somehow, but they remained calm and used this as opportunity than to be afraid.
Then, Core lifted their right hand, and quickly garbbed his left leg. Core tried to hug his left leg, but he noticed after a second of Core grabbing his left leg, and started swinging his left leg to make them drop the hug.
UltSans tried few times, before falling down to his back by his bad coordination and balance.
Core then jumped to hug him, getting to hug him with their arms around his, unabling him to move, but he started to resist, until few seconds later he remembered to use blue magic, and threw Core aside. But he then moved slightly to his left and started coughing, and hesitated while placing his right hand over the left part of his chest, feeling a constant deep and high pain that couldn't let him breath properly.
Core hesitated, but got up, and tried to leave, but their glitch failed, and they just glitched while not moving anywhere. They then stared at him, and thought of what they could do, but in a sudden, he teleported in front of Core, and kicked Core, amking them to fall back and sit down.
UltSans: "The FUCK are you doing?! Stop it!! Do you know how hard is to deal with little bitches as you?! I don't even know why the fuck you have to be so stubborn, inmortal, and-..."
UltSans stopped, his expression slowly changing more soft, as Core was crying. UltSans then hesitated, closing his eyes and taking a deep breath.
UltSans(Whispering): "Yeah, I know... Maybe... I went too far..."
UltSans: "Listen, I... Well... Sorry or whatever... I don't care."
Then, there was a silent for a moment, but more, Core could see more proofs of UltSans not being actually bad, but something more playing in here, and slowly, he was showing more of himself, and maybe... Wasn't as was first saw.
Core: "Why... Are you mean?"
UltSans: "... I don't know... I'm just used to speak like this. is something I carry since always, probably because of this disgusting vessel body of shit. But well, is not as I can do something about it."
Core: "Of course you can, but you have to stop being like this, and want to change. You can be a better person if you try."
UltSans hesitated, staring Core with a side eye stare, until a short moment later he looked to his left and giggled for an instant.
UltSans: "Sure, sure... Fucking hilarious... Is not as I have a hate armor it hurts as fuck and breaks my ass every time I... Well, shit. I just had to say it loudly..."
Core: "... Can you... Tell me what is this place?"
UltSans: "... This is my personal void. I don't actually know what it is, but is how I call it."
UltSans then lifted his right hand and made a sharp bone appear floating up of his right hand, and then while continue swinging his fingers, the sharp bone changed to different objects.
UltSans: "In here, I'm god. I can create adn erase anything."
Then, he closed his hand and the object vanished instantly. And he then pointed with his thumb to his beck, at the broken door.
UltSans: "That's my house, with all the basics. A bedroom, living room, dining room, kitchen... All the basics in short."
He then moved his hand to point down.
UltSans: "This is my lab, where I research and do all the investigations."
He then moved his hand to point at his left, to a path to a door.
UltSans: "There is the gym, spa, and sauna. Where I train in different ways. And put myself in a constant war."
By hearing the word 'war', Core went sadder, and even crying a little. UltSans hesitated, and then side eyed to stared at them.
UltSans: "What now? Seriously, why you have to cry so much for everything?"
Core: "Why do you... make yourself go to that?"
UltSans: "Huh? What do you mean, thing? Speak normally, I don't talk taka taka."
Core then got up with a rush, and cried more, but also went angry.
Core: "DON'T CALL ME 'THING'! MY NAME IS FRISK!"
UltSans was taken back by surprise, and he then hesitated.
UltSans: "Uhm... Sure, yeah yeah, suuure..."
There was an awkward silence for a while, as UltSans tried to think in something while Core tried to relax.
UltSans: "Well, uhm... How about, this?"
UltSans then snapped his fingers, and everything glitched while changed, and all was a garden of all type of flowers. Core hesitated and looked around.
UltSans hesitated, and then noticed the flowers. Core noticed something, and looked at what it was, and then noticed it, a tomb in the middle and around flowers placed for like a ceremonial, and wearing a reflective vest and a gray strange hat, with the words "Papyrus" on it.
Both were staring at the tomb, and all was silent for quite a while, but his expression was firm and deep serious.
Core: "Is that-?"
UltSans: "NOTHING!"
UltSans then also snapped, and all went back as before. Both hesitated for a short moment, but UltSans then snapped again his fingers, and a plate with a butterscotch-cinnamon slice, appeared in front of Core, but it looked a little strange.
UltSans: "This. Is... Uhm... Karmethis, as I decided to call it. And no, I'm not good with names, so shut up and get fucked done with it."
He then gave his back to Core, and crossed his arms. Core hesitated for a short moment.
Core: "I..."
UltSans hesitated, but slowly turned to side eye look at Core. Then, noticed Core being looking down with a sad expreesion.
Core: "I can't eat."
UltSans: "... Sigh Crying for everything, but uhh... Well... Why?"
Core hesitated, not wanting to explain.UltSans hesitated, but then sighed again, and turned and walked towards Core. Core turned to look at him, and then, he grabbed their head with a hug, making their head be against his chest.
UltSans: "Listen... 'Frisk'... I... You can tell me, don't worry."
Core hesitated, but then cried again and hugged him tighly.
After a moment, both were sitting on the couch of the living room. The broken door now fixed as if was new.
Both were in silence, sitting aside each other, looking down.
UltSans: "Well... That... Certainly sucks... But... Uhhm... At least... You had parents at some point. Better have something, than not."
Core: "I guess..."
UltSans: "... Look, I'm not good talking about myself, but... Even if I don't know, because I didn't had parents, I know how to be a brother... Don't ask me how tho."
Core then jumped and hugged him, and he hesitated before hugging them back, and after a second, he also started patting the back of their head.
UltSans: "How about... I try something?"
Core: "What.. is it?"
UltSans: "Is a surprise."
Then, is saw how Ink, Dream, and Swap tried to fix the Omega Timeline.
Dream: "That human... Does someone know who they were?"
Ink and Swap stopped, and turned to look at Dream.
Swap: "No. But how could they enter here? I thought no one bad could enter, as no one would let them, right?"
Ink: "I don't know. When I was fighting them, they already destroyed everything and killed everyone. And there was only Core Frisk. But I doubt Core Frisk would let them do this."
Then, a glitch portal opened, and they got ready for the comback and to fight again. But for their surprise, Core Frisk walked out of the portal, but different.
Dream: "Frisk...?"
Swap: "Frisk, what happened to you?"
Ink: "Frisk, is that... You?"
Core hesitate, half crying, and still very nervous and breathing with slight difficulty, but excited.
Core: "I... This is..."
They all hesitated, still analizing and not understanding what must have happened, for Core Frisk to look as does now.
Their body slight gray with a white undertone. Now wearing a small thick cozy blue jacket with yellow lines and fur, brown pants, and different shoes. Their hair messier, gray with slightly brown tips. Their eyes black eye pockets but smaller, less rounded, and with slightly visual eyeballs; and their pupils brown with yellow sparks. And few weak visually veins on their neck.
Then, UltSans walked out of the portal, while was thinking and humming, with his right hand holding his ching and he was looking at the left.
UltSans: "Hmmm... Oh, I got it! How about Uncored Frisk?"
Core: "That... I don't want a nickname. Just Frisk."
UltSans: "... Oh, well. As you say."
Ink stopped hesitating, and moved closer to Core Frisk.
Ink: "Frisk, are you... Alright?... What did they do to you?"
Core: "I'm... I feel... Alive, and like me again!"
UltSans: "Yeah, well... No need to thank me again, but well. I simply brought them back to life. Now at least I understand how they couldn't die, but well..."
Ink: "How did you... Why did you..."
UltSans: "Isn't it obvious? How dumb you have to be, to not see what a friend needs? They consider you a friend, yet, you couldn't see they wanted to be alive? Because that's what I did."
Swap walked closer, adn stopped aside Ink. And Dream walked towards Core Frisk, feeling how all the positivity inside Core was not under control.
Swap: "Human, how did you bring Frisk back to life?"
UltSans: "First, don't call me 'human'. Second, I just created an artificial soul, then extracted determination from myself and injected it to the artificial soul, then rebooted it and worked on it in my laboratory, adn even if it was a complex ecuation to be solved as it didn't stop bring deep steps to be taken before doing it properly, I still did it."
Ink: "Well, thanks, but now leave. You're a threat to the Omega Timeline, and we can't just forgive what you did here."
UltSans: "Oh, did you really think I came here for that? Frisk just wanted to get back to you, that's all-"
He then stopped as Core grabbed his clothes and dragged it slightly down to call his attention. Then, he coughed.
UltSans: "Yeah, yeah... Well, uhm... Sorry not sorry, i guess, who cares anyway..."
Core: "We talked about this, you was going to be nice."
UltSans: "... Yeah, sure... Well, I'm... May or not sorry for almost killing you, but that's yopur problem for being so weak."
Ink: "I'm not weak. And you're not sorry, you're just faking."
Swap: "But they are trying, even if is not exactly from own will, they are trying to make it be."
UltSans: "Yeah, well, whatever..."
Ink: "Leave the Omega Timeline. I, Ink, the protector of AUs, not want you here in the Omega Timeline, and will make sure you don't get here again."
UltSans: "Oh, yeah, sure. Make it sound official, and-... Wait, protector of what?"
Ink: "Protector of AUs, Guardian of the multiverse and Alternative Universes."
UltSans: "Ain't no way, YOU, of everything, are a protector. Ain't no fucking way!"
UltSans tried to not laugh, but couldn't not giggle.
UltSans: "The brown robes clothed thing, from everything, is a protector of something. You couldn't even protect this place from someone with real intentions of killing, and not even helping your so supposed friend to be back alive. You ain't shit."
Core: "Stop being mean. They're my friends."
UltSans shesitated, but then sighed.
UltSans: "Yeah sure, but well, your friends, not mine."
Ink: "Let Frisk go, and leave already. Let's go, Frisk. Now we have to repair the entire Omega Timeline."
UltSans: "Wait wait wait. You're saying a kid has to help repair a supposed town?"
Swap: "Frisk owns the Omega Timeline, and is who started making monsters and humans from different AUs live here."
UltSans then started giggling again.
UltSans: "Wait wait wait wait, what the actual fuck?! Ain't no fucking way, a kid, did a way better job than the supposed protector! There's simply no fucking way! Imagine having to depend on a kid to protect a created town! And even tho, that same kid does a better work as protector than the actual protector! What a bozo!"
UltSans then laughed, and Ink got angrier and angrier, but tried to let calm the situation as thought thanks to Core Frisk, UltSans was not going to attack and leave eventually.
UltSans: "Damn! That's just hilarious... But well, no. I'm keeping Frisk."
Swap: "What?"
Dream: "Wait, what do you mean-"
UltSans then grabbed Core Frisk, and lifted them up, making them sit on his right arm while also holding them with his own right arm.
UltSans: "Well, is just a kid, and after everything,is not as I can't let you continue ruinning their life. If they went through everything they may have went through while being here, was because they were dead in some way, but they're alive now. And kids can't have a life like this, so I'm keeping Frisk with me, so they have a more proper and normal life."
Dream, Swap, and Ink hesitated, spechless, while UltSans walked back to the portal, but before going through, he slightly turned to look at them.
UltSans: "Oh, and... Don't worry, I'll let Frisk have visits of this Omega timeline thing of place, or whatever Omega shit is. But well, see ya other time."
Core: "Bye later!"
Then, UltSans walked through before any of the three could say anything, and the portal closed behind him.