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writingutshipficscuzimbored · 1 month

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An Unholy Alliance

Fandom: undertale AUs

AUs: underfell & storyfell

Ship: uf!Sans x ssf!Chara

Chapter Six (FINAL): Radix Malorum Est Cupiditas

Chara raises their knife, pointing it at Sans, nether of them breaking eye contact.

“Think about this, Sans. Please.” Chara begs, breaking the silence. “I know you want me to stay with you forever.” They begin, a look of sorrow taking over their face, “but we both know that’s not a possibility… so please… just back down.”

Sans sighs, summoning more bones behind him. “i’ve thought about it plenty, sweetheart. and i’ve made my decision.” He states. “i don’t want you to stay… i need you to stay. i can’t imagine living another day in a world without you.” He adds, taking a step forward, “come on, we don’t ha-”

“ENOUGH, Sans!” Chara yells, cutting him off. “I’m not backing down, and that’s final!” Chara pauses as their arm begins to shake, “Now… Make. Your. Choice.” They demand, voice shaky, all through gritted teeth.

The pair stand still in complete silence for several moments, until… Sans attacks, sending a conglomerate of sharp, red bones towards Chara.

Chara scatters themselves, reforming several meters away from Sans. They summon several circles of flower petals around Sans, who teleports out of the way each time.

Sans counterattacks, summoning five red blasters, aimed at Chara; who dodges out of the way, sliding under the energy beams.

The two stop attacking and face each other once more, “I don’t want to hurt you, Sans! This is ridiculous!” Chara yells in protest.

Sans takes steps towards them, “i thought you loved a fight? what’s with the change up?” Sans asks mockingly

Chara growls through their gritted teeth. “The difference is that I love you, moron.” They rebuke, standing up straight. “And because of that, I don’t desire to do you harm!” They explain.

Sans lets out a half laugh, “funny, cuz…” his eye begins flashing once more, “that’s the reason i keep going.” He adds, before attempting to throw Chara into a wall with telekinesis.

Chara begins to counter by locking themselves in place with vines, but is interrupted when Sans summons a wall of sharp bones beneath them. They use a vine to launch themselves in an opposite direction, still getting clipped by a few of the bones in the legs.

They summon a massive swarm of vines and petals aimed at Sans, who expertly maneuvers around them. Summoning red bones and blasters to attack Chara.

Chara scatters into vines, and digs themselves into the ground, reforming next to Sans and attempting to slash at him.

Sans teleports away, rapidly summoning sharp bones where he stood, managing to stab Chara in the stomach. “you really think i don’t know yer tricks sweetheart?” He asks demeaningly, “give up, you can’t win.”

Chara rips the bone out of their body, as the wound heals itself. “That what they all say. And they’re always wrong.” They respond, with a scowl.

Sans' cocky smile returns, as he reaches into his pocket with his left hand, grabbing ahold of a small remote. “maybe that’s true. but those sorry sons of bitches don’t know you like i do.” He responds, before pressing a button on the remote.

The moment he presses the button, the beautiful collar he gave to Chara, suddenly—and violently—detonates. Tearing a massive chuck of flesh out of Chara's neck, almost entirely obliterating their jaw, and causes them to collapse on the ground.

Chara, unable to speak only lets out noises of pure agony, shock, despair, and hatred, as their vision fades.

“remember what we said? that collar proved that you were mine. good to know it fulfilled that role to the end.” Sans says, before summoning an immense amount of bones, tearing Chara's body apart, until only bloody gibs remained.

GAME OVER

[> LOAD]

[File 0 Loaded]

Chara stands behind Sans as he’s sat in his chair, contemplating. They immediately rip their collar off of their neck and throw it onto the floor, against the wall.

Sans perks up upon hearing the noise, teleporting behind the chair to face them. “that reaction, and expression, tells me that you fell for my little trick, and you’ve just died to me.” He says confidently.

Chara stares him down, knife drawn, eyes full of hatred and disgust. “You’ve been planning this.” They state, voice quivering with rage.

“and that look tells me you’re really pissed off.” Sans adds, taking steps back.

The two slowly circle each other. “I TRUSTED YOU!” Chara yells, “I would’ve died for you.” They add, stopping in place. “Stop this! We can talk this out. We can fix this!”

[File 0 Saved]

“you’ve clearly already heard my spiel, enough to know that that ain’t happening.” Sans retorts, summoning a wall of bones behind him. “let’s just get to the point.” He finishes, sending the bones at Chara in sequence.

Chara creates a massive wall of vines, blocking the attacks, before turning the vines on Sans.

He dodges, using red blasters to ignite the plants. He teleports to the opposite end of the lab, pressing another button on the remote; this time, a dozen laser drones hidden away in cabinets activate. “borrowed a couple of these from alph, i'm sure you remember them.” He says.

The drones direct their red lasers at Chara, who dodges out of the way, using vines to crush four of them. “How original.” Chara comments, annoyed.

Sans continues his attack, summoning swarms of bones, and blasters targeting Chara; all while the drones form complex barriers with their lasers.

Chara scatters, and doges out of the way of the bones, destroying some of the drones while doing so. Although they do get hit in the side by one of the blasters which burns the skin off their arm—melting some of the flesh as well—causing them to grunt in pain, before counterattacking.

“You’re going to run out of tricks eventually, Sans.” Chara says, before summoning a massive swarm of flower petals, all aimed at sans. He simply teleports out of the way.

“not quite yet. i still got shit up my sleeve.” He responds, using telekinesis to push Chara away; Chara attempts to use their vines to lock themselves in place, but the drones redirect their lasers on their vines; causing them to be thrown into the three sharp bones awaiting them.

Chara prepares to scatter, but is interrupted when all the drones focus their lasers on their chest, burning a massive hole clean through it. They collapse, completely paralyzed.

Sans wastes no time, using telekinesis to pick up a counter and crush their body, over and over again until it is completely unrecognizable.

GAME OVER

[> LOAD]

[File 0 Loaded]

The second Chara is brought back, they use massive vines to crush the cabinets entirely, completely destroying the drones inside of them.

Sans looks at Chara, “so, you have die-”

Chara cuts him off, “This is pointless, Sans.” They state firmly. “No matter how many times you kill me, I’ll keep coming back. You KNOW this.” They add, shaking their knife in his direction. “So why- WHY do you keep doing this?” They ask.

Sans lets out a long sigh, “the only way to beat you, is to keep killing until you give up.” He replies calmly, “give up and stay with me.”

Chara laughs, looking down in disbelief. “How can you be such an intelligent man, yet be so foolish?” They ask, the anger in their voice rising as they speak.

Sans chuckles to himself, “sometimes, you have to take risks. and this is a risk i’m willing to take.” He responds.

“Very well then.” Chara replies, lunging at Sans and attempting to slash him.

Sans dodges out of the way, using as much magical energy as he can to summon hundreds of bones, and hurling them at Chara, along with summoning six large, red blasters.

Chara responds by scattering into flower petals, and weaving between the bones. Sans seizes the opportunity and fires all six blasters at Chara's scattered self, incinerating a large portion of the petals.

When Chara reforms, they’re broken, bleeding, missing: large chunks of flesh, their left arm, an eye, and much more. They shamble about, barely walking, gargling on their blood, before being shredded by bones once more.

GAME OVER

[> LOAD]

[File 0 Loaded]

Chara wastes no time, attacking Sans. They summon countless vines and pellets, all dodged.

The two continue trading attacks for what felt like eons. All attacks either being blocked, or dodged, with the occasional hit on Chara.

Chara throws their knife at the exhausted Sans; he outstretches his hand and launches it back at them with telekinesis. Before it can hit however, Chara dodges out of the way and catches it with a vine extending from their hand, then flings it back towards Sans at insane speed.

Sans barely dodges the knife, as it cuts clean through his jacket and stabs itself into the wall behind him. With a panicked look, he walks towards Chara, away from the wall.

Chara's smile returns to their face, “You’re slowing down, darling.” They say tauntingly, before turning into vines and digging themselves into the ground, reappearing behind Sans, to grab their knife.

Sans doesn’t even respond, instead summoning a bone in his hand and charging Chara, who charges at him as well. The moment they get close, Sans teleports behind them and stabs them in the chest. “eat shit…” he says, through heavy, exhausted breaths.

Chara grunts in pain, turning around and ripping the bone from their chest. They look over to him, and start laughing.

They slash at him with their knife, as he barely dodges is; then again, and again, and again, all while laughing maniacally. They make one last horizontal slash, which Sans only dodges by less than a centimeter, but fails to dodge when Chara punches him in the chest with their left hand.

Sans -25hp (5/30 remains)

He flies back and lands on the ground, face planting, grunting in pain. He manages to pick himself up onto his knees.

Chara stops laughing, staring him down. “It’s over Sans. Unless you have any other tricks up your sleeves.” They announce, firmly.

Sans pants, closing his eyes, and reaching into his pocket. “well… i do have one last trick.” He says as he pulls a small black container out of his pocket, opening it, and retrieving the item.

“And what would this be?” Chara asks, both annoyed and curious.

Sans doesn’t respond, instead just throwing the container to Chara's feet.

On the container two, bold, red, letters are visible “DT”.

“No…” Chara shakily says, their face full of horror. “Sans, NO! You know that will do to you!” They yell.

He presents a small white pill standing up, and making eye contact. “i’m out of options, chara.” He says.

Chara holds out their hand, “Please, Sans, THINK!” They yell in protest, “Be smart about this… like the man I… once loved…” they say through a quiet, pained voice.

“I can’t let you leave, sweetheart.” He responds, “I wont let you leave.” He finishes, before opening his mouth and swallowing the pill.

“NO! NO! Goddamn it!” Chara yells in anger, their teeth gritting down, as their breaths become erratic.

Sans' body starts twitching, as his eye flashes on.

Chara approaches him, face full of anger.

Faster than they could react, a group of bones emanates from the floor, tearing their right leg clean off and barely missing the left one.

Before the second set of bones can hit them, they launch themselves out of the way using a vine. Landing roughly on the ground, they generate a vine from their right thigh to act as a temporary leg.

When they attempt to stand, they’re immediately put back on the defensive by dozens of red blasters circling them. They scatter themselves for a split second, just to get out of range, barely dodging a blaster aimed at them while doing so.

“just fucking die!” Sans yells in rage.

They attempt a counterattack, creating a gargantuan swarm of vines, but are magically thrown against the wall and impaled, by Sans. The dozen bones pierced their chest, arms, shoulders, and leg—barely missing their head.

As they look around, they see their once beloved collar lying on the floor, ripped, and dirty.

When they look back to Sans, they see him destroy their severed leg with blasters, and teleport over to them.

His face looks manic, yet prideful, as they hear him laughing his ass off.

He takes a step forward, “you remember how you said that you’d die for me sweetheart?” He asks, summoning a massive blaster. “go ahead and do that again for me, won’t you?”

In a move of desperation, Chara extends a vine from their hand, grabbing their broken collar, and throwing it into the open mouth of the blaster…

A massive explosion overtakes the lab, as all of the energy built up within the weapon violently escapes. The magic bones within Chara vanish, and Sans is sent flying across the lab.

Chara 25/500 hp

Sans 0.0795/30 hp

Chara picks themselves up off the ground, as their body heals itself. They feel their leg slowly reforming, replacing the vine. Face down, on the opposite side of the lab, lays Sans.

[File 0 Saved]

Chara limps their way over to him.

As he attempts to move, Chara plants their left foot on his back, immobilizing him. “It’s OVER, Sans.” They yell, before leaning down, up close. “You lost.” They say quietly.

All they hear, is the sound of Sans sobbing uncontrollably. They take their foot off his spine, and step back, looking at him.

Sans looks up, tears in his eyes. “i- i’m sorry… i’m so sorry…” he says, unable to even look up at Chara.

“Are you now?” Chara asks coldly, not believing him.

“yes!” Sans yells, becoming increasingly pathetic. “i love you. i love you so much. i lo-”

“SILENCE!” Chara yells, cutting him off. “I don’t buy that for a second.” They respond coldly, staring him down.

Sans sits up, his eyes full of disbelief, “w- w- what?” He stammers out.

Chara turns their back to Sans, looking over their shoulder. “You don’t love me. You’re obsessed with me. If you really loved me, you’d say your tearful goodbye and let me go.” They state, doing their best to hold back tears. “But you didn’t do that, because I’m not a person to you.”

Sans sits in complete silence, as Chara approaches, and kneels down to his eye level.

“Sorry to break it to you, but I’m not your pet.” They say, leaning in close.

Sans wraps his hands around them in a pathetic excuse for a hug, delivering apology after apology. “what can i do to make this right?” He asks desperately.

Chara gently pushes him away from themselves, holding him in place. “Despite all I’ve said, I still care about you, Sans.” They say, as tears form in their eyes, “so… if you send me home. All will be forgiven.”

Sans shoots up, life returning to his eye, “really?” He asks.

Chara simply nods, summoning green petals to heal Sans back to full.

The pair wordlessly walk over to the machine, and hug one last time.

“i’m gonna miss you, so fuckin much…” Sans says, through teary eyes.

Chara places one final kiss on his head, “I’ll miss you too, Sans.” They say affectionately.

Chara steps up onto the platform and Sans enters the confirmation code on the terminal.

“ready?” He asks.

Chara nods.

Sans starts to cry again, “goodbye, Chara.” He says.

“Goodbye, my lover.”

Sans slams his fist down on the activation button. In an instant, Chara is gone, returned home.

Sans collapses onto the ground, sobbing.

The End.

Previous Chapter

#storyfell chara #storyfell chara x underfell sans #uf chans #uf sans #underfell chans #underfell sans #underfell sans x storyfell chara #underfell ship #storyfell #underfell #an unholy alliance #undertale #shiftfell chara #shiftfell #chara x sans #sans x chara #chans

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writingutshipficscuzimbored · 1 month

Text

An Unholy Alliance

Fandom: undertale AUs

AUs: underfell & storyfell

Ship: uf!Sans x ssf!Chara

Slight nsfw warning

Chapter Five: Totus Tuus

Over the next week, Chara and Sans continued building their relationship further as they worked on the device, their constant flirtatious remarks, comments, and teasing making them both wonder if any productivity was happening at all.

It's nearing the end of the day, Sans finishes welding the last plate onto the locator device, as Chara works on the wiring that’ll connect it to the inter-dimensional teleporter.

Sans lets out a sigh of relief, as he leans back in his chair.

Chara looks over to him. “All tired out, handsome?” They ask, with their signature grin.

“yeah. that was torture. but i think it’s done” He responds in an exasperated tone, Chara's flirtatious remarks not flustering him nearly as much as they once did. “how 'bout you? nearly done?” He asks.

Chara takes a step back to compare the blueprint with the wire's current state. “Almost, I think I can finish this up in a couple minutes.” They say, as they get back to work. “Say,” they begin, attempting to make small talk, “you never told me about what experiments you and Alphys did. Mind explaining?” They ask.

Sans chuckles to himself, “ya really wanna know, sweetheart?” He asks.

Chara sighs, and looks back over to him, “They can’t be worse than what I’ve been through, lay them on me.”

“alright. alright.” Sans begins, giving in to their wishes, “first there was the determination experiments…” He begins.

“Elaborate.” Chara simply says.

“i’m surprised alph didn't tell ya about- actually no i’m not, secretive bitch.” He begins, laughing under his breath. “we used a device to extract determination from human souls, and we started injecting shit with the stuff.”

Chara stops working, turning to face him, fully invested.

Sans continues. “first it was a flower, and it came to fuckin life and escaped. that’s why that annoying softie exists. it doesn’t help that we used a lot, so then it got control over the timeline. and-.” He shakes his head, “sorry, i’m getting off topic. next we injected monsters, turns out if a monster doesn’t have enough physical mass they basically melt.”

Chara's eyes widen in shock, “I see. That’s… something alright.” They comment, “I’m guessing these experiments took place in the hidden lab, or whatever it’s called?” They ask. “Never got the chance to go down there.”

“that is correct.” Sans replies, nodding. “place is a massive labyrinth. didn’t help that she just left the melted monsters down there. eventually they started fusing together. and now we call them the amalgamates.”

Chara pauses in response, thinking. “You said they melt if they don’t have enough physical mass… what if they do?” They ask.

Sans takes a deep breath, “if they have enough physical mass, or it is a small enough dose. they become extremely powerful.” He explains, fiddling with the welder on the table. “however, it has one major cost… they basically become rabid in response. almost mindless, and animalistic.” He adds, “some monsters can possess it naturally. for example, undyne.”

“Well, that explains what happened there.” Chara comments with a half-laugh. “What other horrid experiments are you two responsible for?”

Sans laughs, “honestly, the others are pretty tame compared to that one. so I’m not even gonna bother explaining them.” He responds.

“Fair enough.” Chara responds, as they get back to working on the wires.

Once Chara finishes, they step back, and admire their work. “So,” they begin, “how much more do you think we have to do?” They ask.

Sans stands up and scratches his head, “uhhh… i think we should be done tomorrow.” He states.

“Alright.” Chara responds; walking over to Sans, kissing him on the head, and embracing him in a hug.

Sans enjoys the hug for several moments, but soon his smile fades. “do… you really have to go?” He asks, “you're happy here and i feel complete with you here…” he adds, eyes closing.

“Unfortunately, yes.” Chara responds, rubbing Sans' skull with their hand, “I have a family at home who needs me, and I can’t just abandon them.” They explain, placing another kiss on his skull. “I wish… it didn’t have to be this way… but- alas.”

Sans looks down, forcing back tears, “i know… i know…” he responds in a somber tone. “i love you.”

“I love you too.” Chara responds, as they part.

They look into each other’s eyes for a long moment, before Sans speaks up, his grin returning. “actually chara, i have something for you.” He says, as he walks over to his workbench.

“For me? How delightful.” Chara responds, showing a smile.

Sans picks up a beautiful wooden case, walking back over to Chara and presenting it to them. “here ya are.” He says.

Chara giggles to themselves, as they open the box.

Inside is a beautiful, golden collar covered in floral designs. Chara gasps, “Sans!” They exclaim in pure joy, “It’s beautiful! Thank you!”

Sans laughs, “c'mon, take it” he says.

Chara picks the collar up, inspecting it from every angle, noticing a name on the side “Aureus”, which Chara summed up to be the monster who created it. They admire the beautifully etched and decorated floral patterns on the gold body, not able to wipe the smile off their face.

“I love it!” They exclaim, wrapping Sans in another hug, “Thank you so much.”

Sans chuckles, “I’m glad you like it, sweetheart.” As they part he looks back to them. “You gonna put it on?” He asks, impatiently.

Without a word, Chara loosens their choker so that it hung low, like a necklace. Then proceeds to put the collar on. “It feels… wonderful!” They say, excitedly.

Chara chuckles to themselves, “So, I’m guessing this truly makes me *yours*, huh?” They ask with a grin.

“all mine.” Sans replies, “and…” he pauses, “plus, it’ll give you something to remember me by.” He adds, trying his best to hide his sadness.

Chara bends down to meet his eye level, “You know I would never forget you Sans, even without the collar.” They respond, reassuringly. “But still… thank you.”

“yeah… you’re welcome.” He responds. “alright, it’s late as hell… let’s go to bed.” He says, waving in the direction of the stairs.

“Right, better get rest for tomorrow.” Chara responds, following him.

As they enter back into the main floor of the house, Chara starts walking over to the couch, while Sans walks towards the stairs.

“where do you think you’re going?” Sans asks, looking over to them. “it’s our last night together. why not make it count?” He asks, with a wink.

Chara looks back to him with a mischievous grin, “I think I like where this is going,” they say under their breath before following him upstairs.

Sans opens the door to his messy room, tossing his jacket aside, and sitting down on his lazily placed mattress.

Chara follows suit, placing their jacket on his dresser, and joining him on the bed. “So,” they begin, “you said I’m ‘all yours’, right?” They ask as they take off their shirt.

“yeah, that’s is correct.” Sans responds, with an excited grin.

Chara chuckles to themselves, tossing their shirt back with their jacket. “Why don’t you prove that to me?” They ask in a seductive tone, “I want to feel that I’m yours.”

Sans says nothing, instead, he pushes them down against the mattress, and bites down hard into their neck and shoulder, with a possessive growl.

Chara lets out a soft moan as the pain passes through them, ending in quiet laughter. “Yes. That’s it.” They say through their closed teeth, beyond pleased as the blood flows down their shoulder.

Sans backs up, his eyes full of desire. “and I have plenty more where that came from, along with much more… exciting things.” He says, grabbing ahold of their shoulders.

“Just what I want to hear.” Chara responds, licking their lips.

The next day went by fast to say the least. Breakfast, and lunch flew by, before they knew it- they were putting in the final touches for the device.

Sans types on the keyboard, doing one final check to make sure everything was in order. The locator device was able to get the universal coordinates for Chara's universe using a sample of their blood. All that was left now was to send them home.

Sans finishes typing, pushing his chair back away from the terminal, and standing up. “i think that’s it.” He says, “now we just have to wait for this thing to power up, and we should be golden.” He adds.

“Excellent.” Chara responds, grabbing Sans and pulling him into a hug.

Sans returns the hug, he tries to enjoy it, but his eyes keep getting drawn back to the machine.

Chara tilts Sans' head up with their hand, looking into his eyes. “Is everything okay, Sans?” They ask, concerned.

“uh… yeah…” He responds, “I’m just… really going to miss you… a lot…” he adds, saddened.

Chara hugs him tightly, “I’m going to miss you too. So much.” They respond.

As they part, Sans stands silently. “can you gimme a moment, please?” He asks.

Chara flashes him a smile, “Of course, Sans.” They reply.

“thanks” Sans says, pulling up a chair and sitting down for a couple moments, his eye flashing; all while Chara looks over him, concerned.

Their moment of silence is cut off, when the machine makes a loud ding, signaling that it’s fully charged.

[File 0 saved]

Sans stands up, and embraces Chara. “so… this is goodbye, sweetheart?” He asks with tears in his eyes.

Chara plants one last passionate kiss on his forehead, “unfortunately, it is, my lover.” They respond, silently crying.

They hug silently for several minutes. Eventually they part, looking into each other’s tear filled eyes.

Sans looks down, “alright, let’s get this over with.” He says.

Chara simply nods, walking over to the machine. Sans silently watches as they get ready to step onto the teleport platform.

Chara steps onto the platform, about to turn around, when suddenly… eight sharp, red bones stab clean through the device, destroying it.

They freeze, in complete and utter shock. They turn around to face Sans, seeing his orange and yellow flashing eye. “Sans, what the hell are you doing?!” They loudly ask, demanding an answer.

“i can’t let you leave chara, you mean so much to me.” He says, in a cold tone. “i am nothing without you. you complete me. you’re everything to me.” He announces, loudly.

Chara grits their teeth, “I need to go home, Sans!” They yell, “I know you love me. I love you too. But you can’t do this.”

“i will do what i must.” He replies, summoning bones behind him.

Chara's expression goes cold, as they draw their knife from their waist. “Don’t make me do this.” They beg.

“took the words right out of my fuckin mouth.”

Next Chapter

Previous Chapter

#storyfell chara #storyfell chara x underfell sans #uf chans #uf sans #underfell chans #underfell sans #underfell sans x storyfell chara #underfell ship #an unholy alliance #underfell #undertale #shiftfell chara #shiftfell #chara x sans #sans x chara #storyfell #chans

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