Yeah I know that this type of fic may not be for everyone but it's really something that I wanted to write before the idea escaped my mind x3

And yeah for those that do enjoy these types of fanfics and this ship ofcourse, you are welcome lol x)

Welp I'm also glad to add another Sans x Chara fanfic to the site since there are not that many out there ( Which honestly surprised me ).

I will probably write A soriel fic later but this comes first x3

(Yes I enjoy both ships. I know I'm trash- XD).

So yeah with all that out of the way let me put out some disclaimers!:

This fanfic will contain some: Smut and Faul language. You have been warned.

Also Chara is a female in this fic.

Furthermore I do NOT own Undertale or any of its characters!.

Also English is not my first language, so if there are some spelling or grammar mistakes feel free to correct me! :)

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Sans stood on the other side of the door, a deep sigh escaping him. Waiting for 'her' to show up as the end of the Genocide neared was always one of the worst things. Especially since he 'knew' what could happen if he failed.

Another sigh. How many times has he been through this? Or rather, how many YEARS has he been through this?. He honestly didn't know...He had stopped counting by this point...

He had failed many times...died many times...and yet, here he was, still trying to stop 'her'. It really didn't look good, but hey, what else could he do?. After all...there was still the tiniest chance that he could succeed...Stopping 'her' once and for all.

Then came the footsteps at the end of hall...getting closer and closer towards the door.

Another sigh. He knew what was comming and he braced himself for it. It probably wouldn't end well, but he wasn't about to make this easy. He never did.

Then the doors finally opend. Quiet footsteps echoed trough the hall as she calmly approached him. Her knife glittering in the sunlight as she stared at him with the same, devilish smirk on her face.

Then she came to stop. Smirk still present on her face whilst she stayed quiet. Waiting for him to speak.

He closed his eyes, another sigh escaping him as he braced himself yet again. This was it. The time had come.

Soon after his eyes would open again, which was soon followed up by his usual dialogue.

"Heya. You've been busy huh?".

"...".

No awnser. Just as he expected. Why would anything be different anyway? It's not as if she had ever spoken to him before.

"So, I've got a question for ya. Do you think that even the worst person can change?...That everybody can be a good person, If they just try?".

"...".

Again he was met by mere silence. Ofcourse.

He chuckled. "Heh heh heh he...All right. Well here's a better question. Do you wanna have a bad time? 'Cause if you step forward...You are REALLY not going to like what happens next".

She took a step forward as she always would. Staying silent whilst doing so.

Another chuckle. "Welp. Sorry old lady. This is why I never make promises".

He closed his eye sockets again, ready to iniate the battle as usual, when he was suddenly interrupted by the sound of clapping and loud giggles. If he could even call that sound 'giggles'. It sounded femenine, yet demonic.

He felt a shiver run over his spine. Well this certainly was new. And in all honesty...It frightend him...Even more so than her usual actions. Was she planning something?.

Once he had opend his eye sockets again, her giggling and clapping came to a halt. Which made him frown in return.

"What's so funny?". He asked. His voice taking more of a serious tone.

"Oh Sansy...". Chara began, as she lifted up her knife, pretending to be examining it.

"If only you knew how much I loved to hear you say that. It's honestly become one of my favourite things hear. Besides your screams ofcourse~". Then she followed it up with another giggle.

His frown deepend. "The heck are you talking about kid?. Know what? nevermind that. Why did you decide to talk now out of all times?".

"Now now Sansy~ No need to ask such boring questions". She replied with as she took yet another step forward, her smirk never fading.

"Don't change the subject kid. You know damn well why I asked. So I will ask you again. Why did you decide to talk now out of all times?".

She took another step closer. Now they where standing eye to eye, only a few meters apart. The brunette reached up, casually brushing a lock a hair behind her ear before awnsering.

"Well it is very simple really. The thing is, Our fight is the only thing out of the whole genocide run that satisfies all my needs. The action, the gore, Everything!. You always managed to give me a good time. But...here's the thing...".

Her smirk dropped, her tone of voice getting even darker. "Lately our fight has been starting to bore me out too, just like all the others...At first I didn't understand, Everything was exactly same and yet, It didn't satisfy me anymore. So I started to think, to experiment. And then I came to the realization that it wasn't really the fight that was the issue...but it was you. I wanted more from you, More satisfaction!".

Another stream of creepy giggles, wich was soon followed up by her signature smirk. "So that's why I finally started to open my mouth, to interact with you. It will surely give me the best experience this way".

His frown slowly dissapeared, his grin becomming wider than usual. "Oh is that so huh?. And what makes you think that I will comply?".

She looked up, slowly licking her knife whilst looking directly into his eye sockets. "Who said that I needed your cooperation?".

And with that she lunged forward, knife in hand. He would easily dodge, by simply side-stepping her.

"Gotta do better then that kid. You missed by a mile".

His reply was soon followed up by a playfull laugh. "Who said that I missed?".

His eye sockets suddenly widend, His left eye instantly becomming a bright blue as he felt two cold arms snaking around neck, pulling him backwards. He could feel her pressing herself against him.

She would the knife out in front of his neck, making sure that he wouldn't attempt to escape.

"Gotcha Sansy your mine now~". She teased as she slowly licked up his neck.

He visibly tensed up, cringing inside. "W...What the hell are you doing?".

She would laugh, finding his amusement in his stupidity. Her free hand would calmly make it's way under his shirt, gently feeling him up. Whilst her other hand stayed put, making sure to keep the knife in place.

"Isn't it obvious Smiley trash bag?. I am trying to feel you up here~. And I am proud to say that you do not dissapoint so far".

He would grit his teeth, grabbing a hold of both her arms in an attempt to stop her the knife away from her.

Chara noticed, instantly changing her stance in order to fight back. To keep control. She clearly didn't like this.

"I was trying to be nice you know!. And now you had to go and ruin everything!. Dammit why did it have to be You?!". She yelled, almost screamed even as she wrestled him to the ground, trying to maintain control as she proceeded to sit on top of him.

"Don't ask me!. it's not like I choose to be the center of your satisfaction!". He yelled back as he struggled to keep her arms away, to keep the knife away.

But in the end, she was the one who gained control again. Pinning his arms down as well. Now he was completely helpless.

"Heh heh heh~ Looks like I won trash bag~". She giggled as she leaned down, holding the knife above his neck yet again.

"Now this can go two ways. The easy way or the hard way. which one will it be?". She asked, smirking whilst tilting her head ever so slightly.

He stared right back into those red eyes of hers, not ready to give up. He was determined, but so was she. "...".

No awnser huh?. Well then she'll just have to pearsue him. She wanted to get her satisfaction and she would, no matter what it took.

"No talking huh?. Well then let me propose deal. Listen up smily trash bag because I am only going to say this once. I want my statisfsction, and you want your 'happy ending'. So, If you promise to satisfy me when I want, whenever I want. Then I will promise to spare one of your pathetic friends. Deal?".

He frowned, his eye turning blue once again. "Where the fuck is the faireness in that?!".

Chara simply shrugged. "Your right, it was useless of me suggesting it anyways. I should just stop wasting my time and get on with it. Heh heh heh heh~...".

"Now listen here kid, Don't think that I,ll-". But he was interrupted by the sudden pressure of a finger on 'lips'.

"Shhhhh~ Don't ruin this for me now Sansy. Be a good boy and I'll let you live okay?".

As soon as she retracted her finger he spoke again.

"Kid I mean it-". But he was interrupted yet again, Only this time it would be because of her mouth that was pressed against his. And the tongue that was forced inside, playing with his blue, magical manifested one.

Never ever had he thought that he would be assaulted by this demon 'child'. But yet here he was. It had only been a few more seconds but he already felt disgusted.

Chara noticed this and pulled back, frowning some. "Do you want me to kill you smily trash bag?!". She yelled, red eyes glowing with anger.

He simply snorted. "Sure by all means go ahead. I'd rather be dead than having you all over me like this".

"Ugh...And here I thought that I could get at least some decent foreplay...".

She sighed rolling her eyes. "Looks like I'll have to this the rough way".

"Kid don't even-". And thus he was interrupted for a third time, but this time it was by the slashing sound of her knife. She had cut open his t-shirt, causing it to loosely hang over his shoulders, along with his blue jacket.

Soon after she would slam her hips down onto his, causing him to gasp. Which in return gave her an opening to kiss him again, so she did. Roughly shoving her tongue into his mouth whilst rolling her hips against his, in an attempt to aurose him.

He closed his eye sockets, trying to resist the temptation to give in. But it was getting harder to do so. After all, when was the last time that he had gotten laid? He couldn't remember. He did remember that it wasn't the best time of his life though.

Once she finally earned her first moan from him she stopped, her now swollen lips almost touching his as she spoke. He almost let out a whimper at the sudden halt of contact, not wanting her to stop.

"Awww Sansy~ did you not want me to stop?". She giggled as she slowly traced over his ribs one by one with the tip of her knife, making sure to leave a ticklish feeling behind.

"I'd be happy to continue ofcourse~...But not before you say the magic words~".

Damn this demon! He was already feeling embaressed enough as it is. But she really had to make it worse didn't she?. He groaned. Ofcourse that sounded exactly like a thing that she would do.

"Please...".

Her smirk widend. "Please who Sansy?~ You'll have to be more specific".

"Please...Chara...". He looked really vulnerable and she loved it.

"Good boy~ That is more like it" She said 'almost' sweetly as she lifted his chin up with the edge of her knife, pressing her lips to his 'lips' soon afterwards. Continuing where she left off.

He followed, This time kissing her back just as roughly whilt pushing his hips back up against hers, hard. With each trust they would both moan, slowly getting turned on.

She clearly got more excited the moment she felt the buldge in his pants press up against her thights.

She pulled away and started cut away the clothing on his upper body, in an attempt to undress him faster. He did the same, pulling at her sweater and leggings in order to pull them down. But as soon as he had started to do so, she stopped him.

"Nu-uh~ I'm the one who's calling the shots here".

Once he was finally topless she proceeded to trail down his body. Leaving kisses and bite marks behind untill she sat in between his legs, rubbing over the buldge in his pants with the side of her knife.

"My my you look bigger than I expected you to be, How delightfull~".

He cheeks instantly became a bright shade of blue. His hands tightly gripping onto the pieces of leftover clothing for support. She had barley done anything and he already felt like he was about to release. Dammit why did he have to ignore his urges for so long?. Now he even became turned on by this demon...

"Now let's see what you have there Sansy~".

She said somewhat teasingly as she pulled his shorts down, reaviling a thick, blue throbbing cock that was clearly needy for attention.

The female demon her red eyes clearly pearked up by the sight of this, causing her to lick her lips. "This is even better than I imagined heh heh heh~".

He then watched as she proceeded to stand up and push her leggings down along with her underwear. Revealing a bare cleanshaved womanhood.

She smirked in satisfaction as she watched him eye her womanhood, whilst looking so helplesslylaying on the ground like that.

"Beautifull isn't it?. Well you should be honored that you get to enjoy this. But first~". She trailed off as she stopped forward, making her way so that she stood right above his face.

She then crouched down, Knees spread wide apart as she sat down onto his face. "Be a good boy and eat me out okay?~". She demanded, rubbing her clit against his nose as she did so.

He obeyed the order. Doing as he was told. The young skeleton would grab a hold of her hips to support her, which was soon followed by his tongue making contact with her womanhood. First he would lick slowly, rubbing his tongue against her thight slit, causing her to let out a pleasing sigh. The he would circle around her clit, the movement of his tongue becomming faster.

This clearly excited Chara as her breaths became more harsh and frequent. "Y...Yes Sansy~ That's it~". She breathed, urging him on. He listend following the order once again. Only when she was finally moaning he fully pushed his tongue inside, causing her try cry out his name in agony. ""F...Fuck Sansy~ I really want you now~".

He stopped, smirking slightly as he did so. She was getting desperate and he knew it. Heh who had the lead now huh?.

"Heh. Who's getting desperate now?". He teased.

Chara stood back up, making her way away from his face and back to his blue throbbing manhood. Looking somewhat annoyed "Shut up trash bag!. Just take me!".

He grinned as he sat up. Still pleased by what just happend. "Yes ma'am".

She crouched down, grabbing onto his shoulders for support. Once she was at his eye levellevel she spoke. "Smile while you can. Once I am done with you you won't be smiling anymore~".

His grin stayed put. "Wanna bet?".

"I really hate you, you know that?". She replied with, pointing her knife at his neck yet again.

"Same here. And I ain't planning on changing that". He replied with, his eye turning playfully blue whilst doing so.

She grinned devilishly. "Good".

Then their lips hungerly met eachothers again, their tongues fighting for dominance whilst doing so. She would then slowly sit down on him, both of them moaning into the kiss as she did so but neither made a move to pull away.

As soon as he felt her adjust they started to move, their hips roughly slamming against eachother as they moved. It was as if they where fighting, Both determined to take control over the other and win.

"F-Fuck you feel so good!~".

"D...Dammit Chara you are so fuckin' t-thight!~".

Both their moans got louder the longer they went on, feeling their climax starting to build up.

Chara was so into it that she finally cut open her sweater with her knife as well, tossing it away along with her knife before fully focusing on the skeleton that she was doing. Wrapping her arms and legs around him.

"O...Oh fuck I'm cumimg!- ".

"Don't hesitate! I want you to fill me up with everything!~".

Once he finally came, filling her up with his blue cum and pushing her over the edge as well..She screamed, yelling his Name so loud that it echoed throughout the whole judgement hall. Poor Asgore, He surely was able to hear it too-. But she didn't care, it felt good. And that was all that mattered.

Only once she got off of him was laying down next him, was she finally able to catch her breath. Not caring how dirty she would make him or the floor.

His blue cock would dissapear, leaving only blue cum behind that had come out. His eye finally turning back to normal as well.

He groaned. "Man...I can't believe that I just fucked you...".

She snickered. "Believe it trash bag. Because this surely won't be the last time. I can only meet my kneeds this way~".

He sighed, rolling his eyes. "Please don't remind me...".

She couldn't help but laugh at this. "Come on. You enjoyed every second of it and you know it".

He sighed again, covering his eye sockets with his bony arm. "I hate you so much".

"Heh heh heh...Same here Sansy~. Same here~". 3

The End.

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Welp that was my first attempt at a lemon. Love it? Hate it?. Let me know what you think XD

Until the next fanfic.

Peace!.