Undertale X Reader Oneshots (Or More If Requested)

Sans "X" Reader Scary Side of Sans

*Drawing of Sans but I drew it while in a car on a bumpy road so that's why it's bad. It was also one of my first attempts at drawing Sans, so yeah.*

"Why'd you do it?!" Sans yelled over the roar of light blue magic being thrown at you in an attempt to hit you. You dodged around his violent attacks and landed on with ground with a thud.

"I let you in my home and I allowed you to roam freely in the underground! I TRUSTED YOU!!" He screamed at you, small tears started to form in the corners of his eye sockets as he spoke. The more he talked the more violent the attacks became until he had you limping and holding your arm, wincing in pain.

"Trusting you was a mistake!! Making that fucking promise was a mistake!! I should have fucking turned you in to the Royal Guard when I had the chance!! WHY'D YOU KILL THEM?!" Sans yelled, arms at his aides, clenching his fists in anger. You stared Sans dead in the eye sockets and didn't answer his question.

"Fine then." He said in a bone chilling (hehe see what I did there 😂😆) voice, letting out a low growl laced with hatred.
"Die."

With a flick of his wrist, the whole judgement hall light up in a blinding bright blue light which seemed to erupt from the room itself, vaporizing you in an instant.

You lay there on the ground, blood dripping from where the lasers from the gaster blasters had shot you through the abdomen and out the other side. A gaping hole in you mid section was all that was remaining of it.

You coughed and spat out blood and it left rivets of it lacing down your chin and trailing to the yellow tiled floor beneath your crumpled body.

"...S-San-ns..." You cough weakly.

"..."

"S-Sans... I-I'm sorry..."

"..." He sighed quietly and walked over to your dying form and knelt beside you.

"T-take my s-soul... An-and leave th-the underg-ground.... Break the b-barrier....escape......" And with those final words, you faded form existence.

"'Sorry' won't bring them back."
Sans whispered, venom dripping from his words, and with that, he absorbed your soul and walked out of the judgement hall.

'No,' you thought, 'but this can.'

You reached out into the never ending darkness and pressed the large, yellow, glowing button. Then the whole world flashed white and you were back in the Ruins.

Sans POV.

'Maybe it'll be different this time?' Sans thought to himself while he waited for the human to exit the Ruins.

'Aw who am I kiddin... they'll probably just-'

"SANS!!" Sans perked his head up at his name and looked around for the source.

"I could have sworn that was the kid's voice..." Sans whispered to himself.

"Sans?" A quiet, hesitant voice called from behind him.

Sans spun around only to come face to face with the child. The same child who had murdered his friends and brother. The same child he had left to die in the judgement hall....

"Heya kid, I was just-" Sans was cut off when you ran up and hugged him tightly, as if fearing that if you let go, you would cease to exist.

"SAA-aaaaaans, I'm so sorry Sans" you cried into his coat, tears streaming down your face as you hiccuped and sniffled.

Sans, startled by this action took a few seconds to recover but eventually sighed and held you in a hug until you calmed down.

"Shhhh. It's okay.... It'll be okay..."

"ITS NOT OKAY I KILLED EVERYONE!!!" Your screams were muffled because you had buried your face into his coat.

"Your right, but do you know how to make it better?" Sans said soothingly.

You unburied your face and sniffled, shaking your head 'no'.

Sans grabbed your shoulders roughly and looked you dead in the eyes, one eye had gone completely black and the other had a light blue orb with the same color radiating off of it as smoke. And in a deep and dark voice that sent chills down your spine, he growled:

"Don't. EVER. Come. Here. Again. Understood?"

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Bet that ending surprised you didn't it XD well make sure to leave a request and comment on what you thought. See you next time my Wolves!!