Undertale AU Sibling Oneshots

Underfell! Bros x Sister! Reader

(yay my favorite AU! I'm always excited to write this AU)

Requested by the lovely Liza_mcb!~

Pulling your hood up, you ran through the snowy fields currently being pelted by a raging blizzard. You were just over it! Papyrus got mad at you again.
Or well... worried.
Papyrus had an odd way of showing affection. That usually resulted in pain or a beating.
While you knew Papyrus was just worried, you were just over it.
So you ran while your brothers were out, using the back entrance so they wouldn't see your footprints.
You went deep into the woods, only slowing down when your were sure the snow had begun covering your tracks.
You settled in a small hollow under a tree, staring out beyond the gnarled roots at the white landscape. You had half a mind to live out here and never return, but you knew you'd end up back home, by your own accord or otherwise.
You usually did.
You stayed under that tree for a while, just letting yourself relax and various aches heal. You snapped to attention at the sound of footsteps.
They were different from Papyrus' or Sans', and so you peeked out.
A human.
Grinning, you slowly got out from your hiding spot. Maybe if you brought this human back to Papyrus, he wouldn't be so harsh on you.
The human turned to you, and a shiver raced down your spine at the sight of their cruel grin and dust-coated knife.
Gritting your teeth, you fired a few bones at them as they ran towards you. You teleported out of the way, firing attack after attack at them.
They dodged each one, using their knife to swat some aside.
Eyes flaring, you summoned a blaster, charging it before sending it their way.
They dodged it, and you managed to duck out of the way of their knife.
This child laughed at you, choking on their own blood as you managed to lodge a bone into their side.
You panted softly, adrenaline pumping and your nerves alight. This human was too fast, especially for a child.
"(Y/n)!"
The sound of your name was enough to break your concentration, and you snapped back to attention as the human was suddenly in front of you.
Their knife glinted against the sparkling snow, and blood splashed in your vision as you fell back into the snow.
The human coughed and choked as a cluster of bones shot through the chest, holding them aloft in the air.
You were shaking, crawling back and away from the human as your life flashed for a moment.
"(Y/n)!"
You jumped slightly, looking up as Papyrus and Sans came into view, worry clear as crystal on their faces. Before you could speak, Papyrus squeezed you tightly into a hug, Sans joining the hug a moment later.
"Don't you ever run off again!" Papyrus barked in a hushed voice, the fact you nearly died clearly having shaken him some.
You wanted to make a joke on how he always says that whenever Sans or you runs off, but you now was not the time.
So simply nodded, and clung to him, letting him carry you as Sans collected the human soul.
Papyrus let you sleep with him in his room that night, ready to chase away any nightmares.