Chainsmoker [ Gaster!Sans x Reader ]

1. First Things First

(I've assembled a mini playlist for this book. For maximum feels, feel free to listen to the music while reading!!!)

"Sans."

The word, it acted as a lifeline, was your lifeline. Once, you thought, that this small strand of letters meant something to you. It had been a name once, a title given to an object that you never even thought about killing. Because you couldn't kill someone, but you could kill something.

And a word was what you have to a something.

"Sans," you searched his eyes for any sign of the person he had once been. Emotions, most likely a foreign concept to the skeleton, had been ripped away hundreds of timelines ago. One could only watch their brother butchered for so many times before simply going numb to it all.

Dots flashed in the corner of your vision as the pressure around your neck increased, your lungs screaming for the oxygen that had been deprived from you. You couldn't help but laugh at it all, blood gurgling in your throat and eventually splattering across his skull. If he was taken aback by this at all, Sans offered no indication.

Because wasn't it just funny?! He killed you over and over again, a primitive part of him hoping that there wouldn't be a reset, that your mangled corpse would remain a corpse on the tile floor of the Judgement Hall. But you never died. You always came back.

"I don't understand," you wheezed, not even bothering to conserve the few traces of oxygen still left in your bloodstream. What did it matter, anyway? You'd come back again, getting closer and closer until you finally delivered the killing blow... "What is the purpose in any of this? I'll kill you in the end, I'll kill all of you!" Blood was streaming out of your noise and mouth now.

Sans didn't reply, the cold look still plastered on his face. You couldn't help but wonder if he was actually thinking anything, or if he had simply succumbed to his fate and become part of the machine that functioned under your power over the Reset button.

You continued on with your act, hoping to aggravate him even further. "I-It wasn't my fault!" you pouted. "It was C-Chara! S-She made me do it!"

And you were suddenly much closer to Sans' face. His left eye flared a dark blue, reflecting every ounce of hatred he felt for you and your miserable existence. "Don't blame a dead girl for your mistakes," he hissed. "Chara is dead, she has been for years now."

This earned nothing but a fit of sadistic laughter from you. There was still a part of that comedian in there somewhere. He hadn't withered away like the rest of monsters in the Underground.

Yet.

His anger intensified as he noticed the cocky grin on your face, reveling in his rage. Red dots flashed before you as the grip around your throat increased in such an intensity that you began to feel the tendons in your neck sever. This is new, you thought, no longer retaining the ability to breath.

You spat out a mixture of blood and saliva onto the ground. "I'll come back," you croaked, though it sounded much more like the growl of a wounded animal than actual dialogue. You staggered once and slipped on your own blood, landing face first onto the ground, whimpering slightly as you felt your nose bend at an angle it was not meant to.

"It's over," Sans hissed in your ear. "We're going to be free from you."

Confusion was the last thought that registered in your mind as you felt your grip over reality lessen until your consciousness separated from your body. Hell, you had died thousands upon thousands of times during your adventures, but something about this seemed so much more final.