
Posted originally on the Archive_of_Our_Own at https://archiveofourown.org/
works/8437315.
  Rating:
      Explicit
  Archive Warning:
      Major_Character_Death, Underage
  Category:
      M/M
  Fandom:
      Fullmetal_Alchemist_-_All_Media_Types
  Relationship:
      Edward_Elric/Roy_Mustang
  Character:
      Edward_Elric, Roy_Mustang
  Additional Tags:
      Dark, Alternate_Universe_-_Canon_Divergence
  Series:
      Part 2 of Sinners
  Stats:
      Published: 2016-10-31 Words: 2327
****** Fall From Grace ******
by tirsynni
Summary
     Fullmetal was a nightmare, but he was Roy's nightmare: his own
     pleasurable path to damnation.
     “I’m going to bring my brother back. And you’re going to help me.”
Notes
See the end of the work for notes
“Ha ha ha. It’s you again, little one. Come back for more? What do you have to
offer me this time? Another arm? Another leg?
“What a face, little one! Oh, you don’t like being called that, do you?
“Not enough, little one. Try again. And again. And again.”
xoxoxox
“What's a soul, really? Take out the myth, it's just the spark of life. Our
blood... that's from her blood. That's a fair trade.”
xoxoxox
“What’s the equivalence of this?” Fullmetal mused, flesh hand wrapped firmly
around Roy’s aching cock. He pumped it slowly, watching precum bead at the tip.
The tip of his pink tongue swiped at it, as if testing it for something. Roy
didn’t give a damn what. Maybe later. Not now when it felt so fucking good.
Fullmetal could experiment as much as he wanted as long as he didn’t stop.
Fullmetal squeezed and dragged upward, like he was trying to pull out every
inch of precum from Roy’s hard length. Roy groaned deep in his throat.
Cool metal fingers touched the dripping tip. The temperature difference almost
made Roy scream. Fullmetal’s expression didn’t change: distant and analytical.
“What would the equivalent be?” Fullmetal mumbled to himself, still stroking
with one hand and swiping at the tip of Roy’s dripping cock with the other.
Roy had nightmares of Fullmetal ripping off his cock with his automail hand,
holding it still hard and dripping with blood and cum in his hand.  “Is this
connected to the soul?”  he would ask, uncaring of Roy’s screams.
Those nightmares were far, far away right then. The gleam in Fullmetal’s eyes
would bring them back that night, like clockwork, but right then Roy didn’t
care. He arched into Fullmetal’s grip. Fullmetal hummed, the tip of his pink
tongue sticking out of the corner of his mouth.
“Semen is one half,” he mused aloud. “Masculine energy. One half…”
Sweat beaded Roy’s skin. He had no idea how long they had been here, Roy half
undressed on his couch and Fullmetal fully dressed but for his gloves beside
him. If Roy’s writhing and moaning affected Fullmetal at all, it didn’t show in
his golden eyes or studious expression. Roy wanted to fuck into those hot/cold
hands, wanted to turn on Fullmetal and fuck  him , see if he could get the
young man to respond, but they both knew who was in charge here. Something
about that, about Fullmetal so casually holding his leash when it should be the
other way around… Roy groaned again and fucked upward into that grip.
“Sulphur,” Fullmetal mumbled. “Sol…” He tugged again, twisting his hand at the
end in  just  the right way, and Roy moaned. “Mercury. What could be mercury?”
There was something terrifying and hideously arousing about that feral gaze
focused so steadily on him. Roy was a means to an end. He knew it. That was the
only reason Fullmetal gave him any attention at all. His life meant little to
the other alchemist, no more than an alchemical component. Bradley viewed him
and his ilk as leashed dogs. Fullmetal? Sulphur in a dish.
Roy’s balls were tight and aching. Just a little more was all he needed to
come.
“Symbolism only, not factual. A symbolic equivalence, not literal.” Another
twist and another tug and Roy was so damned close he would  let  Fullmetal rip
it off as long as he got to come first.
“Luna...mercury...give and take…” Fullmetal’s eyes sharpened, a vicious madness
similar to Scar’s religious fervor...before Fullmetal took his head off.
“Duality in One.”
Both hands wrapped around Roy’s cock, small but strong, hot and cold, and then
Fullmetal leaned forward and took the tip of Roy’s cock into his wet mouth.
Roy screamed.
xoxoxox
“I am the called by many names. I am the world, I am the universe, I am god, I
am truth, I am all, I am one, and I am you.”
xoxoxox
Between missions, Fullmetal could typically be found in the library, jotting
notes. Roy preferred that. Otherwise, Fullmetal slunk around like a hungry
wolf, citizens watching him with a wary respect no other soldier or State
Alchemist merited. Even worse were the times Fullmetal vanished without a
trace. He generally reappeared again within weeks, no visible bloodstains, but
they all knew that didn’t matter. Not to an alchemist of Fullmetal’s caliber.
After Scar’s ruthless beheading, Fullmetal cleaned himself with a nonchalant
clap.
“At least he’s a  clean  little psycho,” Hughes wheezed. He had retched a
little when Roy gave Fullmetal permission to keep Scar’s arm. It was never seen
again.
So it was surprising when he not only vanished for two weeks but was seen again
sitting in Roy’s kitchen, drinking his coffee at the table with blood still
splattered on his boots. It was hard to see the stains against Fullmetal’s red
coat, but the blood dried a darker shade than the signature clothing.
Roy paused outside the kitchen to study the young man. He didn’t fool himself
by thinking Fullmetal didn’t know he was there. Fullmetal had known probably
before Roy had even entered the house. He just wasn’t important enough or merit
as enough a threat for Fullmetal to look up from his notes. Since Fullmetal
didn’t seem to care he was being studied, Roy took the time to look him over.
Fullmetal may be a dangerous wolf amidst cocky, tamed hounds, but Fullmetal was
his  dangerous wolf. Sometimes, Fullmetal was too slow or distracted and the
blood on him was  his  blood.
Fullmetal looked fine. No new bruises or marks. Those golden eyes were clear
and sharp. His color was good, and he sat comfortably, with no signs of illness
or injury. That blood definitely belonged to someone else.
Finally, Fullmetal looked away from his book to grin at Roy. Roy caught a
glimpse of the Leviathan Cross again. Fullmetal’s grin looked too wide for his
face, too many white, sharp teeth to fit into his mouth. “About time, Bastard.
I’ve been waiting forever!”
Last night, Roy dreamed it hadn’t been his cock Fullmetal ripped off: it was
his head. Clean off his shoulders, blood pouring like a fountain while
Fullmetal peered into the remains of his shredded neck.  “Can I see your soul
now?”
Roy swallowed and forced a smile. Fullmetal’s eyes gleamed, a predator sensing
a weakness. “Some of us actually show up to work, Fullmetal,” he pointed out.
He walked past Fullmetal as casually as he could to where half a pot of coffee
still simmered. The kitchen reeked of old, burnt coffee and the latest fresh
pot. How many cups had Fullmetal drank so far? He surreptitiously glanced at
Fullmetal. He looked excited ( wolf on the scent ) but not on the edge of death
by caffeine. Confident there was no immediate emergency, Roy pulled down a mug
from the cupboard and poured himself some coffee.
“I was working,” Fullmetal argued, sounding oddly playful. Roy disliked it even
as heat coiled in his gut. Playful Fullmetal was a dangerous Fullmetal.
“Research! Do you remember it? Something actual alchemists do?”
That little voice that sounded far too much like Hughes’s was yelling a warning
now. Roy only hummed and brought his mug to his mouth. “Actual alchemists check
in with their superior officers so they keep their funds and materials so they
can do research. Sound familiar?”
Fullmetal huffed. “Yeah, whatever, Bastard. Anyway, I need for you to fuck me.”
Coffee went down the wrong pipe. Roy choked and wheezed. Fullmetal just
watched, unimpressed.
“Don’t do that when you fuck me,” he offered helpfully. “It’ll ruin the
research.”
xoxoxox
“Quiet, child. This is what you wanted, isn't it? I will show you... the Truth!
”
xoxoxox
“Alphonse, no! No, dammit. You won't take him too. Give him back! He's my
brother! Take my leg. Take my arm! Take my heart,  Anything, you can have it!
Just give him back! He's my little brother, he's all I have left!”
xoxoxox
It was confirmed quickly: Fullmetal was completely unaroused by sex. Roy tried
at first before Fullmetal grew impatient and stopped him. “That wasn’t the
point of this,” Fullmetal informed him before sliding a hot, lube-wet hand over
Roy’s flagging cock. He liked his partners just as involved as he was, and at
first Fullmetal’s lack of participation was distracting. Then Fullmetal’s
eagerness showed itself in other ways, in the energy flowing through him and
the fire in his eyes and how readily he fell to his hands and knees for Roy.
Face to face wouldn’t work, not with that limp cock mocking Roy.
“Fuck me,” Fullmetal said, and it was a command.
There were multiple creatures in nature which killed their mates after sex, and
they flitted through Roy’s mind as he took the lube and squeezed some into his
hand. Except Fullmetal looked so sweet, scars and metal and incongruously soft
hair still in its braid over his back. His ass was smooth and touchable and for
the night, Roy’s. He doubted anyone else had touched it.  This?  This was  his
.
“Do you need for me to alchemize you a map?” Fullmetal asked archly. He wiggled
his ass. “I thought you were supposed to be an expert at this or something?”
At defiling untouched boys? At finding new and inventive ways to damn himself?
At being led around by his own cock and pride and greed?
Roy shoved two slicked fingers into that tight hole. Fullmetal howled and Roy
grinned, baring white teeth like Fullmetal had earlier.
For once, Hughes’s voice was entirely silent inside Roy’s head.
“Fuck, you bastard,” Fullmetal rasped. His voice had never sounded so good.
Roy twisted and thrust his fingers into that tight heat, adding a third when
Fullmetal started pushing back. He glanced around Fullmetal and his grin grew.
Fullmetal was growing hard. Impulsively, he leaned down to kiss the dip at the
base of his spine, and then he had to twist to avoid an automail foot.
“None of that.” Roy felt the growl through Fullmetal’s body, felt the youth
squeeze around his fingers.
Right. All of this was  for science . Lust made him giddy but not so stupid as
to actually say it out loud. Instead, he slicked himself up. His cock was
sensitive to the touch, and he hissed, flesh twitching in his hand. When was
the last time he got off with another person who  wasn’t  Fullmetal. Fullmetal
growled at him again, and Roy pressed against the tight hole. So tight. So
fucking tight. Roy growled back and  pushed  inside and he couldn’t remember
anything ever being so tight.
Fullmetal was quiet except for panting. No cursing. No threats. No snarls or
taunts. Roy had no idea what he was thinking and it was so hard to care. Roy
thrust again and again into that delicious heat.
Little death , he thought deliriously, fucking up into Fullmetal. Fullmetal
grunted and tightened his grip on Roy’s sheets. They shredded under his
automail hand.
Hard and deep into Fullmetal’s body and every analytical handjob paled to this
wet heat, dryer than a woman but still so sweet. A hard thrust and a gasp and
just like that, it was all the sweeter. Another thrust and Fullmetal tossed his
head back, his braid whipping and slapping against his back. He bared his
tanned neck and Roy wanted to bite it, for once leave  his  mark on Fullmetal.
Fullmetal’s panting breaths stuttered, choked gasps, and Roy grabbed those thin
hips and fucked harder, as deep as he could, wanting to hear Edward Elric
scream .
Sweat dripped from Roy’s forehead, onto Fullmetal’s back, and it was only then
that he realized Fullmetal was sweating, too. Pleasure coiled tight in his gut,
at the base of his spine, balls full and heavy.
Best sex of his life and it was with an underage, psychopathic boy, Roy rested
his forehead against Fullmetal’s spine and tried not to laugh.
That close, he could hear that Fullmetal wasn’t just panting: he was muttering
to himself. Sulphur and Sol, mercury and other things Roy couldn’t make out. He
was chanting the words under his breath like the Ishvalan priests in the
desert, right before Roy burned them alive.
“Fullmetal --” he gasped, right before the cunning little shit  squeezed
around him, tight and fucking  perfect .
The world flared white, a moment of absolute ecstasy. For just that moment,
everything was
“Perfect,” Fullmetal breathed.
xoxoxox
“For what could equal the price of a human soul?”
xoxoxox
Roy woke up and knew he was alone, but it was more than that. There was an odd
silence, an eerie stillness to the bedroom. He lay there and breathed in the
warm scent of Fullmetal still in the sheets. There was mingled sweat and cum.
His dick felt worn between his legs, almost chafed. Shivering, he pushed
himself to a seating position.
There were spots of blood on the sheets. He might have been eager, but he was
no horny little pup.
That was more than sex last night. He knew it before he ever stuck his dick in
Fullmetal. Roy knew it, and it still hadn’t stopped him. He was no horny little
pup, but he feared he was something worse.
Roy showered and dressed slowly, knowing he was stalling the inevitable. He
never said he wasn’t a coward, though.
The phone was ringing when he walked into the kitchen. As Roy walked to it, he
heard the screams of the Ishvalans, the roar of his flames, and Kimblee’s
distant, spiraling laughter.
“Mustang,” he greeted. Hawkeye on the other end, voice grim and words succinct.
Roy closed his eyes.
“ What’s the price of a life? ” he mouthed to himself. In his head, he heard
Fullmetal’s young, high voice declaring that he was going to bring his brother
back.
And Roy was going to help him.
Roy covered his mouth to hide his hysterical smile.
xoxoxox
“Back again, little one?”
End Notes
     Happy Halloween!
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their work!
