Chapter Text
You. You fell.
Okay. Maybe you didn’t fall. Maybe you jumped. For complicated reasons that don’t really matter anymore. Because now you’re in the Underground. Hurt. But alive. The flower warned you. You didn’t listen. The goat monster warned you. You didn’t listen. You don’t know how to do anything except keep going forward. And you think that’s okay.
Remaining with Toriel wasn’t appealing in the slightest anyway. An extremely overbearing monster with a Jocasta complex who demanded you stay by her side at all times. Unbelievable. You knew the creatures trapped down here were dangerous but not that they were all fucking crazy. Crazy in ways that were interesting, but awkward. And unpleasant. You made it past her rather easily. She wanted to kill you. But you were too determined to let one nutcase stand in your way. In the end, she begged for death. You almost killed her, but you didn’t. You wish you felt guilty about it, but you don’t.
The flower impedes you again, imploring you to stay in the Ruins. You smile at him. This creature is absolutely right. You tell him you know you’re walking into your grave. But you have to keep going. He says he’ll try to protect you. You thank him. Carry yourself to the massive stone door. Palms press flat against the surface. Push.
Stepping out of the Ruins, a fresh, wintry breeze instills new life into you. Boots crunch in the fluffy snow. The door slams shut dramatically behind you. No going back now.
It’s a pleasant forest. With an ordinary path trailing off into the horizon. Scan for monsters. No one in sight. Start walking. Hands tucked in the pockets of your hoodie. It’s cold. Everything is fine for a while.
But then. A branch, 15 feet behind you, snaps in two. Okay. Something is following you. Adrenaline and norepinephrine flood your system. Just keep moving forward. There isn’t anything else you can do. In your hyper-alert state, you hear every brush of wind against the pine trees, every waft of snow blowing by, and every. footstep. that. follows. a fraction of a second after your own.
Ahead is a bridge, with huge, lumbering tree trunks acting as a barrier across it. You can already tell you won’t be able to make it through that. Could maybe climb over it with a running jump. Immediately you bolt, sprinting as fast as you possibly can, making a B line for the overpass. You leap, your panic lending enough strength for you to reach the top of one of the shorter tree trunks. Unfortunately, the top is covered with ice and snow, and your fingers slip uselessly, gravity pulling you back to Earth as you screech. Land with a THUNK directly on your back, knocking the wind out of you.
Footsteps, footsteps. Even though your world is spinning and your are lungs choking for oxygen, you sit up. Peering over your shoulder, you come face to face with what you can only presume is a monster, towering over you.
“h u m a n,” they say, voice low and rumbling directly in your ear. Vision quickly returning to normal, frantic static in your ears fading, you take in the image of a rather stocky skeleton. At least, you assume it’s a skeleton, based on the exposed legs. Short in stature, hands in their pockets, fur-lined hood pulled up to conceal their face. “d o n ‘ t y a k n o w h o w t a g r e e t a n e w p a l?” Slowly, a left hand appears from their jacket pocket to reach out to you, fingers resembling phalanges of a human skeleton. “t u r n a r o u n d a n ’ s h a k e m y h a n d.”
Of course you don’t reach out to it. You just stare, frozen stiff for a few seconds before an unseen force takes control of your arm, thrusting your entire body around, facing them, hand being pulled into theirs. Phalanges tighten around your hand, yanking you up to your feet. Two red pinpricks of light ignite inside the hood, black centers pooling in the scarlet, dilating like pupils.
You should pull your hand away and fucking run, but you can’t move. You just gape at the creature as they shake their head a bit, hood falling back onto their shoulders. Oh no. He’s hot. He’s literally a skeleton, hollow eyes and nose, pronounced cheekbones, and a cartoony grin, complete with jagged teeth. A few beads of sweat on his brow. Gaze… hard to read.
Swallow hard and squeak out one word at him, “hi!”
He chuckles loudly, the noise echoing across the wall of trees as he releases your hand, returning his to his pocket. “hey. that wuzza real cute maneuver ya just did, sweetheart.” His voice is so dark and rich, it travels through your entire body. You might even say it rattles your bones. Fuck, why are you thinking about jokes right now, run, you idiot!
But you don’t run. You smile stupidly and finally realize you’re still holding your hand out. Bring it to rest at your side. Run run run, (your name)! Or at least say something.
“yer a human, right?” he says as he leans towards you, apparently wanting to get a better look, eyes unabashedly examining you. He was already pretty close, now he’s just a half a foot away. Smells like… mustard. “thaz adorable.”
Jaw unhinges, making an audible creak, mouth opening, and out of no where there’s a red, translucent tongue running across his lower teeth, then slithering back inside. What the fuck. That shouldn’t have turned you on. “i’m sans,” he booms, “sans the skeleton.”
He pauses and you realize he’s expecting a response. Of course he is, get your shit together, be normal. Maybe you got lucky and ran into a merciful monster. “I’m (your name),” you respond.
“y’know…” he starts, reaching up to brush a finger under his nose, “im actually sapposed ta be on watch fer humans right now. but…” his hand lingers near his face as his smirk turns… predatory. “i could be persuaded ta not kill ya-“ you gulp at that. “—if ya give me somethin’ i want.”
Think on that for a moment and come up with what he’s getting at rather quickly. The heavy gazing, the tongue, the fact that you are a human in the Underground with nothing to offer other than your body and your soul. He wants to fuck. Goddamn, is this a hentai or something? This can’t be real life.
But there he is, Sans the motherfucking skeleton, who you met literally three minutes ago, dropping some pretty heavy hints right in front of you. How does that even work if he’s a skeleton? Magic? Probably.
A growl bellows in his chest, sending tingles up your spine. “i ain’t a patient guy, pumpkin. bettah' make it quick.” The tone is completely different, still heavy, but much more intense. Can tell there’s a lot of power and tension behind those words. “ya could be dead inna heartbeat,” he promises.
You visibly shiver and feel your face flush. God, you wish you didn’t have a fear kink and that you weren’t attracted to this monster. Sans continues, “bash yer head into a tree. crush yer skull with two fuckin' fingers. would be so easy.” Bite your lip to hold back a whimper, keeping your eyes on his shoes; gross, red sneakers with mustard-colored socks.
He must have noticed that. His hand reaches forward and roughly grabs your chin, forcing you to look him in the eyes. Pupils widen, red lights starting to flicker. “holy fuck,” he sounds genuinely flabbergasted, “yer actually gettin’ off on this, aren’t ya?”
Press your lips together, clenching your fists at your sides, trying not to make an expression that totally gives you away. “Maybe. Just a little bit.”
Sans’ grin stretches to an impossible width, exposing every inch of his dagger-like teeth, eyes brightening so much they're almost sparkling. “hell yea, i just hit tha jackpot.”