
Posted originally on the Archive_of_Our_Own at https://archiveofourown.org/
works/6350557.
  Rating:
      Explicit
  Archive Warning:
      Underage
  Category:
      M/M, Multi
  Fandom:
      Fullmetal_Alchemist:_Brotherhood_&_Manga
  Relationship:
      Alphonse_Elric/Edward_Elric/Roy_Mustang
  Character:
      Alphonse_Elric, Roy_Mustang, Edward_Elric
  Additional Tags:
      Threesome_-_M/M/M, Double_Penetration, Sibling_Incest, Dirty_Talk,
      Explicit_Sexual_Content, Explicit_Language, PWP
  Stats:
      Published: 2016-03-25 Words: 1163
****** Elrics Are Not Safe for Work ******
by alkahestic
Summary
     How he manages to find himself in these situations, he’ll never
     really know. It always seems to start with a verbal sparring session
     between him and Fullmetal with Alphonse trying to mitigate. And then,
     before he truly understands what’s happening, he finds himself in
     positions like these... It’s torture of the sweetest kind.
     (tumblr prompt: Do an Elricest sandwich with Mustang stuffing.)
Notes
     originally posted on tumblr as part of a series of prompt requests
     when i hit 2k followers. not really meant to be set at any particular
     point in canon. it's smut. take it as it is lmao
How he manages to find himself in these situations, he’ll never really know. It
always seems to start with a verbal sparring session between him and Fullmetal
with Alphonse trying to mitigate. And then, before he truly understands what’s
happening, he finds himself in positions like these. This time, it’s with legs
spread as he slams Fullmetal into the desk under them. At the same pace,
Alphonse (sweet, darling, caring Alphonse, of all people) thrusts rough and
fast into him.
It’s torture of the sweetest kind. Fullmetal is glaring up at him, with eyes an
impossible shade of liquid gold, urging him on with curses and damnable purrs
of Colonel. No doubt, Edward would have his mismatched legs wrapped around his
superior’s middle, coaxing him deeper and faster, were it not for his brother.
Al has a surprisingly firm grip on the colonel’s hips and who would have
thought that a boy who had only recently regained a body of flesh would know
just how to angle his thrusts. Oh, he has no doubt that both Elrics, both
infuriatingly and devastatingly and intoxicatingly gorgeous Elrics, have taken
ample advantage of Al’s returned form. But even thinking of such things at a
time like this could be dangerous. So mind-numbingly dangerous.
“Too bad you can’t see him, Al. He’s so fuckin’ hard inside me and he’s got
that perverted face on again.” Bruised lips are parted as Fullmetal pants,
teeth bared in a grin that suits the impish little bastard. Edward’s mouth
should be illegal, he’s certain. That voice in his ears prompts him to buckle
forward, forehead pressing hard against a metal shoulder while he hears a groan
from behind him.
Alphonse needs no prompting to adjust his angle again, in perfect timing with
the way Fullmetal’s thighs flex, his body going slightly rigid as he tightens
around the colonel. It’s not for the first or the last time that he wonders if
the Elrics are capable of telepathy.
“Does it feel good, Brother?” He can feel the Al’s lips on his shoulder, wet
and warm and impossibly soft. And it’s unfair because it’s all too much at
once. If Fullmetal’s mouth should be illegal, Alphonse’s should be outright
demonized. “I bet he’s about to come inside you. I bet he really wants to. He’s
getting tighter. He must be getting harder too.”
Evil incarnate, thy name is Elric. Al is right, of course, and he can feel his
legs beginning to grow weak as his thrusts become more erratic. In response,
Ed’s voice has lifted, urging him on even more.
“Yeah, that’s it! Fuck, Al, he’s so good. I wanna feel it. More.” The word is
punctuated by Al’s cock finding a perfect connection inside him, making his
vision go white.
How can either of them expect him to last much longer after that? He’s groaning
loudly and he’s probably dug his fingernails sharp into Ed’s hips again, but he
doesn’t give a damn because all of his muscles are singing and the coil of
pleasure that had been building inside him snaps taut.
Both Elrics continue moving both behind and below him, milking his orgasm for
as long as possible. But eventually, color comes back to his vision and he’s
forced to withdraw from Ed’s body. Al pulls back as well, allowing him to slump
into his office chair where he ignores the way the remnants of his orgasm stain
the leather.
Even sated as he is, he can’t look away from the shifting scene. Al has settled
himself atop the desk (he’ll have to thank the younger Elric later for being
the only one of the three to take care of the paperwork strewn about) and now
Edward is climbing into his lap. He can’t see Fullmetal’s face, but it’s
perfectly acceptable since he can watch as Al’s fingers grasp his own cock and
then carefully press the tip against Ed’s ass. The groan Ed makes as his
younger brother slides inside him is echoed by the colonel and he leans further
back into his chair so he can watch.
It’s always difficult to determine the best part of these occasional moments of
devolution into lust. He’s torn between fucking and being fucked by an Elric.
Or watching the two brothers as they melt so entirely into each other. The
latter is certainly enough to get him hard again, especially when he has such
an excellent view of Al’s cock thrusting into his older brother’s ass. Coupled
with Edward’s pleas against his brother’s neck and the sight before him, he
can’t help but need to stroke himself.
Over Ed’s shoulder, he finds Al’s eyes, and for what seems like the thousandth
time this evening, his breath catches. Al’s fingers, gripping Fullmetal’s ass,
spread the cheeks wider.
“Brother. You’ve gotten him hard again.”
Another impish laugh can be heard and Ed grinds himself harder down on Al’s
cock.
“Not surprised. Colonel’s always such a perv. C'mon, Al, let’s show him a bit
more.”
Without further prompting, Al turns just enough to allow him a view of Edward’s
flushed and sweaty features. Long hair is now sticking against the older
Elric’s forehead, but he doesn’t notice it much because he’s staring at
Edward’s eyes. The little bastard is taunting him with that look.
“What’re you waiting for, Colonel?” Ed jerks his head back over his shoulder
and again, Al spreads his brother’s cheeks apart. “Al won’t mind if you both
wanna fuck me.”
He doesn’t need any more prompting. In what seems like less than a second, he’s
crossed the space between them and as Al pauses the slow roll of his hips, he
carefully begins working the head of his cock inside Ed, alongside Al’s. The
effect is instantaneous. Between Al’s dick throbbing against his and the feel
of Ed tight around them both, he’s groaning loudly again.
Ed quickly positions his hands on his brother’s shoulders while Al’s hands seek
out those of the colonel. With that, they’ve found their rhythm again. Hard,
fast, and a bit desperate. Just like how all three of them like it. Fullmetal
laughs breathlessly, but soon the laughs melt into more grunts and curses.
Within what seems like seconds, Edward is coming unwound between them. He
shouts a loud, rough Fuck! and the colonel doesn’t have to see to know he’s
made a mess of his brother’s stomach. Al, as he always has, follows soon after
Ed. He can then feel the way Al’s orgasm pulses against his own cock and the
way Ed has tightened almost painfully around them both. Another thrust sends
him over the edge again and his climax sends his thoughts spiraling.
Whatever it is that always seems to bring them to this point, he might never
really know. But as he slowly withdraws from Ed, his hands releasing Al’s so he
might give both Elrics a gentle massage, he can’t help but think he doesn’t
mind much at all.
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