
Posted originally on the Archive_of_Our_Own at https://archiveofourown.org/
works/8979679.
  Rating:
      Explicit
  Archive Warning:
      Rape/Non-Con, Underage
  Category:
      M/M
  Fandom:
      Undertale_(Video_Game)
  Relationship:
      fell!papyrus/fell!sans, Fell!Gaster/Fell!Sans
  Character:
      fell!papyrus, fell!sans, Fell!Gaster
  Additional Tags:
      Mind_Control, Incest, nonconsensual_mind_control, socket-fucking, Eye
      Trauma, Alternate_Universe_-_Underfell
  Series:
      Part 3 of Socketfucking
  Stats:
      Published: 2016-12-23 Words: 1516
****** UF Escape ******
by Shadow_of_Quill
Summary
     Papyrus will do whatever it takes to protect his brother. Even if his
     brother needs protecting from what’s inside his own head. Even if
     Papyrus is supposed to be too young.
Notes
     This was originally submitted to Askellie’s tumblr. I figured I might
     as well post it here to go with the Undertale fic for the series.
Papyrus hates Gaster. Gaster keeps him half-starved, Gaster hurts him and calls
it ’tests’, Gaster makes him do things and never lets him know what he’s meant
to achieve by doing them so he can never tell if he’s succeeded or failed.
Papyrus could forgive him all of that. But Gaster hurts Sans. Sans, who’s the
only one to be nice to Papyrus, the only one who cares about him.
Gaster hurts Sans a lot.
Papyrus hates him for it.
Gaster makes Sans cry, and that’s bad, but it’s worse when he makes Sans obey
him, makes Sans go blank and empty till the magic dripping down his face fades
enough for who he is to come back.
It takes longer every time, and Papyrus is growing scared that someday Sans
won’t come back at all.
But he has a plan.
He knows exactly what magic Gaster uses to control Sans, has had to watch too
many times as Sans is forced to kneel and offer his face while Gaster opens his
fly.
He’s stronger than Gaster, he has better control over his magic. Sans says he’s
too young to do what Gaster does, but that’s just because Sans doesn’t know how
powerful he is.
He can do this.
He has to. Before Gaster destroys everything that makes Sans Sans.
 
Sans doesn’t know what to make of it when Papyrus tugs him into a hidden
corner, doesn’t like his reaction to Papyrus tugging down his scrubs to reveal
an erect cock (he’s too young, this shouldn’t be possible)(Sans shouldn’t be
relieved by it) but that doesn’t stop him from following Papyrus’ orders to
kneel for him.
“don’t think it’ll work, bro,” he mutters, but there’s hope shivering through
him because if it does - if it does - “gaster’s had way more experience with
this trick than you.”
“BUT UNLIKE GASTER’S, MY MAGIC WILL BE AIDED BY THE FACT THAT IT IS REINFORCING
YOUR OWN WISHES. WON’T IT, BROTHER?”
That sort of question should be asked with arrogance, not concern.
“yeah, bro.” Sans has no idea if it works like that. But maybe if he tells
himself it does, that could make it true?
 
Papyrus braces himself with both hands on Sans’ skull and pushes his hips
forwards. Sans not only doesn’t resist, he moves his head forwards so Papyrus
is pushing through his eyelight faster than he’d intended to, so Papyrus finds
himself completely buried in his brother’s eyesocket.
It feels strange. The eyelight is a solider layer of Sans’ magic, but the
inside of Sans’ skull is full of it.
The closest he can find to a description is if he pushed through a layer of
jelly into warm syrup. It’s… disturbing, but maybe that’s because he knows what
it really is.
Sans moans, but he doesn’t sound as if he’s hurting. Papyrus has to ask,
though, because he’s never heard quite that sound from him before. “SANS?”
“mmmm.” Sans pats at his side clumsily. “feels good, bro.”
The thought is so bizarre, Papyrus has to say it out loud. “YOU LIKE THIS.”
“mmmmmm.” Sans shivers at the words, and Papyrus abruptly remembers what he’s
doing, why he’s buried in his brother’s socket.
“SANS.” He tries moving his hips, imitating the in-and-out Gaster uses, and
it’s - he does it again, hears Sans moan again, and this is something, there’s
something -
“SANS. YOU’LL OBEY ME. YOU WON’T LET GASTER DESTROY YOU.” He tries to think of
a better order, can’t, and blurts out, “YOU’LL STOP HIM.”
Sans is panting, Papyrus can feel his magic swirling around Papyrus’ intrusion
(it feels good, he can’t imagine how it could feel good for Sans but for him it
feels far too good to be buried in his brother), and they both moan in unison
as Papyrus gives in to his body’s urges and starts thrusting in earnest.
“YOU’LL - YOU’LL NEVER LET ANYONE ELSE - ORDER YOU LIKE THIS,” and he’s done,
it’s too much, he’s pouring his own magic into his brother and Sans takes it
all.
(He doesn’t know what to think when he sees the wet stain of Sans’ own magic
spreading from his crotch, so he just - doesn’t acknowledge it. He doesn’t see
it. It’s not there.)
 
Sans stands in front of Gaster, bones humming with the orders his little
brother fucked into him (God, his little brother fucked him and he liked it)
and the older, repeated orders Gaster has fucked into him again and again (to
obey, to submit, to never be able to refuse) and tries to hide all of it.
He must do a good enough job; Gaster doesn’t whip out his cock, doesn’t test
him with painful or humiliating orders (and why would he when Sans had his
magic dripping down his face two days ago? When it feels like each time his
mind is raped makes it harder to return to who he was, who he’s supposed to
be?).
“#URrY UP,” Gaster orders, the familiar garbled sounds setting Sans’ teeth on
edge. “W3 H^vE W0R< 7O D0.”
“yessir.” Sans follows behind him, tries not to show the hum of (stop him)
show. (He should obey, he wants to obey, but Gaster is so powerful and strong
and how can Sans dream of doing anything against him?)
“WE $HAL1 3E W0RK!NG oN )AM^GE ANd $CARR!nG.”
Sans feels sick as Gaster sweeps into the room, worse when he sees that someone
managed to catch Papyrus and tie him down on the table. His brother’s magic is
flaring as he snarls defiantly at Gaster, but Sans spots the moment his brother
looks at him and the shame almost makes him gag. His brother’s orders thrum
through his bones, and he wants to obey them, he does, but -
Gaster picks up a saw and lays it against Papyrus’ socket. “What are you
doing?” Sans yelps, can’t stop himself.
Gaster smiles at him, malice dripping from his face. “7H!$ $U3J£(7 W!11 3E mUch
M0R£ U$EFU1 0NC£ ! C^N $£(URe H!s l0YA1Ty ^$ ! d0 yOUR$.”
The words don’t make sense, and then Gaster starts the saw, makes the first cut
that will open up Papyrus’ eyesockets till they’re large enough for him to -
There’s screaming
There’s marrow flying everywhere
There’s dust
 
Papyrus drags Sans behind him as they flee, slams blue bones up in every
doorway they pass and each one they go through, tears through every monster who
tries to stop them with white bones and blue magic and everything he can think
of until they’re alone, somewhere he’s never been, and the sounds of pursuit
are distant enough that he finally lets his guard down.
Sans collapses into a quivering pile of bones the moment Papyrus lets go of
him. He hasn’t said a word since killing Gaster, hasn’t done a thing except
follow Papyrus’ lead, and now that they’re safer Papyrus is starting to think
he can afford to worry about that.
“SANS?” he asks.
Sans stares at him, eyelights pinpricks in his wide sockets. “pap.” He lunges
forwards, scrabbling at Papyrus’ clothes, and Papyrus realises what he wants
and creates his cock before he can think whether it’s a good idea.
Sans sighs with relief at the sight of it, looks up at Papyrus desperately.
“bro, please, i need, i-i can’t, please, pap -”
“WHAT DO YOU NEED?” Papyrus can’t make sense of how Sans is acting, can’t tell
what’s going on, and his attempts are made harder by the part of him that’s
urging him to just thrust forwards the way he did before and feel his brother
surround him again.
“i need someone else in control,” Sans says, the raw honesty breaking Papyrus’
heart, “i can’t do something like that again for myself.”
Papyrus wants to cry, but one of them has to be in charge, and if Sans can’t
handle it then Papyrus will have to. He rests his hands on Sans’ head, lines
himself with the other socket the way Gaster always did, and presses forwards
just a little. “YOU WON’T HAVE TO,” he promises, and his cock breaches Sans’
eyelight. “JUST OBEY ME, SANS. THAT’S YOUR ONLY RESPONSIBILITY. JUST LET ME
MAKE ALL THE DECISIONS FOR BOTH OF US AND I WON’T LET ANYONE ELSE HURT YOU.”
Sans groans hungrily, rocking in place so he’s fucking his own skull on his
brother’s cock. “YOU LIKE THIS, YOU’LL LET ME DO IT TO YOU ANY TIME, YOU’LL
NEVER LET ANYONE ELSE TOUCH YOU LIKE THIS,” Papyrus says, all his random
thoughts spilling out as words, “YOU WON’T LOSE YOURSELF THE WAY YOU DID
BEFORE, YOU’LL NEVER LOSE YOURSELF LIKE THAT AGAIN, YOU WON’T, YOU’LL BE MINE
AND YOU’LL - YOU’LL -”
He looks down to find Sans squirming, both hands down his pants, and his other
eye stares up at Papyrus with devotion as he moans, “yes, yes, yes-”
They both come as Sans uses the title Gaster always insisted on, “yes, boss!”
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