Posted originally on the Archive_of_Our_Own at https://archiveofourown.org/
works/4789235.
  Rating:
      Explicit
  Archive Warning:
      Underage
  Category:
      M/M, Multi
  Fandom:
      Shingeki_no_Kyojin_|_Attack_on_Titan
  Relationship:
      Marco_Bott/Jean_Kirstein, Marco_Bott/Reiner_Braun
  Character:
      Marco_Bott, Jean_Kirstein, Reiner_Braun
  Additional Tags:
      Threesome_-_M/M/M, Double_Penetration, Anal_Sex, Bottom_Marco_Bott
  Stats:
      Published: 2015-09-17 Words: 4333
****** Sweet Tooth ******
by Incertitude
Summary
     Jean and Reiner can count their blessings because they get to wreck
     Marco thoroughly
Notes
     I was close to deleting this work, I recently read chapter 77 of the
     AoT manga and saw who killed Marco and how Marco really died and I've
     been an honest mess. I can't even think about Reiner without getting
     angry and sad, same to Bertolt and Annie so yeah. My first and last
     work with Reiner in it.
Marco woke up early in the morning pretty content, usually he’d go back to
sleep but he decided to just get up. He slinked out of Jeans’ room going down
the hall on his way to possibly get himself some tea or coffee. However he was
surprised with the sight of Reiner sitting in the dining hall, a cup sitting in
front of him emitting little waves of steam.
“Good morning, Reiner,” Marco greeted with a bright smile magically not
affected by how sleepy he was, his small bangs were untidy and bent from his
face pressing into Jean’s chest during the night, they added to his adorability
though.
Reiner smiled back, “morning, Marco,” he wrapped his large hands around his hot
drink.
“Coffee?” Marco questioned.
“Ah, yeah, there’s still more if you want some, it’s fresh.”
Marco laughed softly, “that’s what I’m here for, thanks,” Marco wandered into
the kitchen with a yawn that he’d been expecting. After making himself a cup of
coffee he came back to the dining hall joining Reiner at the table, “did you
sleep well last night?”
Reiner looked across the width of the table at Marco who took a small sip of
his coffee sighing favourably at the taste, “yeah, turns out I was more
exhausted last night than I thought. So I turned in early, now I’m up early. No
surprise there.”
Marco set his cup down, “I just by chance woke up early so I decided to get up
anyways. Maybe train a bit. Do you want to train with me? We can help each
other…”
Reiner’s jaw clenched a couple times as he appeared thoughtful, Marco suspected
Reiner wasn’t even listening to him now.
“Are you alright?” Marco tilted his head unintentionally.
“Are you having sex with Jean?” Reiner’s eyes stared into Marco’s wide brown
ones.
“Um,” Marco felt heat rise in his face, Reiner was his friend, there wasn’t a
need to hide anything even though he was staggered at the sudden question,
“yeah… yes, I am.”
Reiner nodded, “I kinda heard you guys one night. You’re pretty vocal, Marco.”
Marco’s face was definitely red, he picked his cup sipping some of his coffee
feeling himself grow more embarrassed, “s-sorry you heard that,” he couldn’t
hold Reiner’s gaze so he observed the table taking sudden interest in it.
 “It’s fine, really,” Reiner couldn’t stop the smile on his face as he watched
Marco look absolutely mortified—in the cutest way, “so are you in a
relationship with the hothead?”
Marco hummed gently still pretty stunned at the topic, his stomach felt all
floaty, “I’d like to think so,” he chuckled glancing up at Reiner.
Reiner scratched his cheek as he heaved a sigh, “fuck, I really don’t know how
to ask this now.”
“Ask what?” Marco raised a brow.
“Gimme a second, freckles.”
Marco tittered at the name, but he waited patiently as Reiner gathered his
nerve. At this point Marco was becoming nervous too.
Reiner tapped his thick fingers on the surface of the table, his gaze lifting
to Marco, “I was kind of wondering if… if you and I could, y’know, have sex one
night?”
Marco gulped feeling a shiver run up his spine, his face becoming more boldly
red, “I-I-I,um,” he bit into his lower lip, “gosh, i-if I wasn’t with Jean
I’d…” he looked at Reiner showing he didn’t know what to say.
Reiner took a deep breath feeling his cheeks get warm, “maybe….”
Marco waited for Reiner to continue what he was saying, his eyebrows pressing
together writing confusion on his face.
“Maybe if you ask Jean we could have a three-way instead?”
Marco’s breath was gone in an instant as he held Reiner’s daring gaze.
-
“What?!” Jean shouted causing Marco to flinch in surprise.
“Jean, please calm down,” Marco settled onto the bed where Jean sat with wild
hair while wearing an angry expression.
“How can I be calm when that-that guy just attacks you with that kind of
suggestion,” he huffed running his fingers through his hair.
“No one attacked anyone,” Marco calmly stated.
“But still… that kind of suggestion.”
Marco leaned in now kissing Jean with soft parted lips, immediately Jean kissed
back. Marco pushed Jean down onto his back as he crawled on top of his
boyfriend; their kiss deepened allowing their tongues to slide together slowly.
Jean murmured quietly into the kiss, “you made your coffee sweet again.”
Marco smiled quite widely, a laugh slipping out, “sorry.”
“’s fine,” Jean sighed soundlessly when Marco dragged his lips over his stubbly
jaw, “your sweet tooth is adorable.”
“But what do you think?” Marco hummed into the crook of his lovers’ neck.
“Think about what?” Jean asked as his hands crept down the curve of Marco’s
back to grope at his ass.
“Having a threesome with Reiner,” Marco’s hands slid under Jean’s shirt feeling
his hard muscular stomach. Marco couldn’t help but think about how Jean’s
muscles could have also developed from all their sex—because they had sex
whenever they could which did require a lot of effort. One time they had sex
while hanging from their maneuver gear in the forest; that was a great memory.
Jean moved his hands up to Marco’s waist settling them there, the thought
slowly consuming him, “what do you think?”
Marco pressed his forehead against Jean’s chest as his hands stopped, “I… want
to do it. I think it’s quite thrilling. But if you don’t want to do it then
we’ll politely turn Reiner’s request down, no big deal.”
Jean bit into his lip as he took some time to think about it again, and it
would be pretty hot to see Marco take another guys’ dick. Really hot actually,
his cock started to perk at the thought.
“Alright,” Jean breathed out, his thumb rubbing gently on Marco’s lower back
under his shirt over warm skin, “but if Reiner steps out of line I will kick
his ass.”
Marco smiled opportunely as he propped himself up lifting his head to look at
Jean, “thank you for being so open,” he kissed Jean’s chin lovingly earning
himself an eye roll.
Jean raised his hand slapping Marco’s ass unexpectedly hard making the freckled
male jolt, “Jean!”
-
For the day all the survey corps were outside pulling weeds (via Levi’s order),
once the weed pulling was done the younger members played around fitting in
some training time getting some tips from Erwin himself. All of them were
dirty, some more than most so they were ordered to shower and clean up before
getting dinner.
However Marco, already knowing what the night held, requested a bath. He was a
trusted member like Armin so the request was granted by Erwin. He snuck away
from the others preparing his hot bath; it was relaxing though despite his
nerves buzzing from anticipation.
He’s never had a threesome before; neither did the other two males, so there
wasn’t any high standards to live up to which was a great relief. The freckled
male scrubbed his body taking the time to clean himself out. Once he was
finished he got out emptying his bath, with a towel around his waist he air
dried his body while he fixed his middle part fluffing his bangs a little bit.
Wearing fresh pyjamas, (that would almost certainly be on the floor soon),
Marco returned to his friends, a small piece of paper hidden in his palm. While
everyone was preparing for dinner Marco brushed closely against Reiner nudging
the folded note into his large hand, Reiner looked shocked but didn’t get a
chance to say anything because Marco slipped away going straight to Jean’s
room.
-
“Alright I gave him the note,” Marco shut the door behind him before crawling
onto the bed over Jean who was reading a book.
“So the ball is rolling?” Jean shut the book once he placed a bookmark between
the pages, the bookmark was made for him by Marco as a gift, and Jean placed
the book on the nightstand beside the bed right next to a large lantern that
lit the room with a warm glow.
“Yeah,” Marco kissed Jean after he pulled off his own shirt tossing it aside.
After the sweet kiss Jean took a moment to just gaze at Marco’s bare chest, his
muscles were getting more defined which wasn’t a turn off at all, freckles
beautifully decorating tan skin, there was some discolouration from the straps
but that didn’t take away loveliness.
“You look like this is your first time seeing me shirtless,” Marco chuckled as
he kissed Jean again.
Jean reached out running his hands over Marco’s stomach, “yeah but your body is
always changing,” Jean bit onto Marco’s lower lip briefly, “I think I even see
a couple new freckles on your face,” Jean’s smile widened as he pulled back
poking a spot on Marco’s cheek, “right here!”
Blush bloomed on Marco’s face as a giggle erupted from his throat, “Jean!
That’s embarrassing.”
“God, you’re so fucking cute I can just eat you!” Jean grabbed Marco’s face
bringing him closer grazing one of his canine teeth over Marco’s cheek making
the male giggle more.
Just then there were a couple sturdy knocks on the door, Marco inhaled and
exhaled slowly, “he’s here,” he whispered kissing Jean’s nose before slipping
off the bed walking to the door shirtless. Marco felt nervous again as he
pulled the door open, Reiner stood outside with furrowed eyebrows—the same
expression he’d wear when he was concentrated.
“H-hey, Reiner…” Marco opened the door more, “come in.”
Reiner gave a little nod his eyes flicking over Marco’s bare chest that he
hasn’t had the privilege of seeing since their training days, “Marco,” he
strolled inside feeling a bit of sweat form on his forehead when his eyes met
Jean’s.
“Jean stop,” Marco stated already knowing Jean would try to stare Reiner down,
the freckled male shut the door gulping as he turned around looking at the two
males that looked back at him, “alright.”
“Ah,” Reiner’s eyes finally lowered to Marco’s chest taking in the freckles,
“you got more freckly.”
Marco huffed a pouted sigh, “enough with the freckles,” he tried to play down
the blush on his face.
“You’ve seen Marco shirtless?” Jean cut in sounding offended.
“Of course, we had a communal shower so we all saw each other naked at some
point, Kirstein,” Reiner spoke as if this was barely something worth
mentioning.
“Naked?” Jean cut in again.
“Please you guys,” Marco butted in this time, “considering you’ll both be balls
deep inside me soon I really think this isn’t something worth arguing about…”
Reiner and Jean’s attention instantly snapped back to Marco.
“No more rivalry,” Marco declared before taking a step toward Reiner testing
out the mood. He and Reiner had a few questionable moments in their earlier
days but that was swiped away by his love for Jean, so there weren’t any love
attachments to the broad blond, he took a deep breath staring up at Reiner who
was taller than him by a few inches.
“Ah,” Reiner glanced to Jean who watched with subtle interest.
“It’s okay to touch me,” Marco spoke stealing back Reiner’s attention.
Reiner relaxed a bit as he reached his hand up cupping Marco’s jaw feeling the
smaller male lean into it, his brown eyes were wide and full of stars. Dang,
Jean was lucky.
Marco’s hands flinched up when Reiner finally leaned in pressing their lips
together. The kiss was different than Jean’s; Jean was into deep kisses that
were hungry yet loving, Reiner’s was unsure but warm. Marco felt small in
comparison to Reiner’s width and height, not a bad temporary change at all.
Jean’s tongue flicked over his lips to the sight, his eyes shifting when
Marco’s hands dove confidently under Reiner’s loose shirt running over large
muscles, Reiner’s hand moved to the back of Marco’s head as their kiss
deepened. Jean shifted his sitting position as hints of heat started to gather
in his stomach, “Marco, c’mere,” Jean stood up ditching his shirt and pants
deciding to wait a little bit before discarding his underwear.
Marco pulled away from Reiner taking in a breath, they both shared a glance
before Marco stepped back dropping his pants surprising the two when he
revealed he wasn’t wearing any undergarments. His cock was half hard, he kicked
aside his pants before going over to Jean who pulled him into a kiss, “fuck,
you’re hot,” Jean whispered against his mouth, “on the bed,” he practically
ordered.
Marco climbed onto the bed settling on his knees in the center; Reiner caught a
glimpse of a perfectly hairless asshole. They were still teenagers in an adult
world after all, but still, holy fuck Reiner’s armored titan was getting
excited inside his trousers.
Jean got out a small glass jar of oil before getting behind Marco on the bed,
“since I know how to stretch Marco you go in front of him,” Jean’s tawny eyes
lifted up to Reiner’s gaze, “Marco’s very skilled,” he smirked.
Reiner took a deep breath through his nose before smirking back, “I know,” he
pulled his shirt over his head putting on a show of flexing his muscles for
Marco.
Marco’s face grew hot each passing second, now he was questioning whether he’ll
survive the two or not.
Jean’s eyes narrowed at Reiner but he was obeying Marco’s rule even if Reiner
was barely doing that, his hands grabbed soft hips moving Marco onto all fours
more comfortable, “I’m gonna stretch you now so just relax and enjoy yourself,”
he stroked one of Marco’s ass cheeks giving it a brief squeeze before getting
the jar of oil open. Marco was probably going to be the one enjoying himself
because Reiner and Jean won’t touch each other, that’s for sure.
Reiner was fully naked before getting on his knees in front of a very innocent
looking Marco; he looked more innocent than normal despite all his sexual
adventures with Jean.
Marco took in the sight of densely muscular pale thighs moving in front of him,
Reiner’s cock was thick and a bit shorter than Jean’s but meatier. When Marco
bit his lip he saw the cock jolt as blood flooded it, he gazed up at Reiner
seeing that the broad blond was watching him with a tight jaw. Marco shut his
eyes lowering his head a bit when he felt Jean swipe a generous amount of oil
between his cheeks over his hole, now Jean rubbed it slowly with a finger
occasionally circling it working on softening it.
Marco huffed out softly as heat spilled into his lower belly; he opened his
eyes looking back at a fully erect cock, Reiner’s thick fingers threaded
through Marco’s short locks dropping a hint. Marco reached up a hand grabbing
the base of the large cock, instantly Reiner moved forward accidentally bumping
his erection against Marco’s cheek. The brunette’s tongue slid out as he guided
the tip of Reiner’s cock inside of his warm mouth.
Reiner sighed out as his hips slowly inched forward as Marco leaned in relaxing
his throat as Reiner slid deeper, “sh-shit,” he pulled back seeing his phallus
coated in saliva, Marco was impressed with himself for not gagging even though
he wanted too when the thickness of Reiner stretched his mouth.
Marco’s hand resting on Reiner’s stomach moved to grab his hip when Jean
slipped a finger inside him wiggling it around experimentally, Marco’s body was
used to anal sex so it was like he was born to do it, after a minute Jean got
two fingers inside the tight heat of his lover stretching more efficiently.
Marco sighed before taking Reiner’s cock back into his mouth, he bobbed his
head shallowly as he added suction trying his best not to get distracted by
Jean’s fingers moving inside of him. Marco decided to focus on the cock in his
mouth as he started to take the male deeper into his throat, his managed to
swallow around it a couple times—to which Reiner would curse, tug on brown
locks as his hips faltered gentle thrusting.
Marco’s eyes flew open when the bed shifted, he felt Jean’s hot oil slicked
cock rub between his cheeks over his twitching hole.
Reiner gaze shifted from Marco’s red face to Marco’s ass where he could see the
top of Jean’s cock peeking out between two round ass cheeks. Marco’s moan was
muffled as it vibrated over Reiner’s cock as Jean pushed the tip of his phallus
inside of Marco opening groaning to the pleasure.
Marco’s thighs trembled a little as he unintentionally nudged his ass back,
“patience,” Jean sighed eyeing his own dick as he slowly moved it deeper past a
ring of tight muscles, his jaw dropped as Marco squeezed his dick, “ohfuck,
you’re always so good.”
Marco’s eyebrows were furrowed as he tried his best to keep sucking on Reiner’s
cock bobbing his head a little. Jean looked up at Reiner who quickly looked
back, they held each other’s gaze as Jean abruptly thrusted his hips his skin
clapping against Marco’s, Marco’s body jolted forward, his nose bumping against
Reiner’s lowly trimmed pubes, the freckled male cried out in surprise, his hand
on Reiner’s hip dropping down to the bed as he clenched sheets.
Oh god.Marco felt his body burning, as he strained to collect himself both Jean
and Reiner pulled back at the same time before they both thrusted back into
Marco making him release more muffled cries and moans. By now Marco just let
his jaw fall open with his tongue hanging out a bit letting Reiner face fuck
him since his thoughts were crashing.
Reiner tightened his grip on Marco’s hair as he repeatedly began to thrust his
hips, his cock sliding down Marco’s throat.
Jean’s eyes narrowed at Reiner, he grabbed Marco’s slender hips as he began to
pound harder into him.
Marco couldn’t even grasp the situation for a little while before he realized
Reiner and Jean were competing again but this time with Marco helplessly
trapped between the two horny teens.
Tears fell over freckled cheeks, his eyes couldn’t help but water, he couldn’t
even catch his breath so his moans were broken against a hard cock pistoning
between his lips. Marco’s back was dipped sweat rolling down the dip of his
spine as his ass jiggled from Jean’s harsh thrusts.
He couldn’t believe they were fighting with him between them! He was the one
they were fighting for anyways, how could they just forget that?!
Jean hit amazing places inside him that sent pleasure pulsating through his
quivering body; he could clearly smell Reiner’s musk, the male leaving trails
of precome inside his mouth, his eyes rolled back as the two teens continued
their relentless assault.
Marco couldn’t take anymore, he let out a particularly shrill cry as he
squeezed Reiner’s hips trying to make him stop and he did, Jean slowly down too
until his hips were flush against Marco’s bottom.
When Reiner pulled his cock out strings of saliva dripped onto the bed as
Marco’s mouth hung open, he panted out as he lowered his head, his shaky hand
dropping back to the bed.
“Fuck, I’m sorry, Marco,” Reiner sincerely spoke as he pet back Marco’s soft
hair before lifting the smaller male’s head seeing his lust hazed eyes, his
tanned skin beautifully darkened rosy, his lips were shiny with saliva and pre.
Jean pulled himself out of his lover making the bent over male shiver with a
whine, “c’mere, babe, ride me.”
Reiner scooted back as Jean lied down on his back once he repositioned the
pillows, Marco turned over hovering over Jean’s hips with clearly unreliable
thighs. Oil was dripping down his inner thighs from his hole.
“Look Reiner,” Jean spoke up with a decently breathy voice, his pale hands
reached around grabbing two freckled ass cheeks squeezing them pulling them
apart slightly so Reiner got a good view of Marco’s glossy hole. Marco’s hand
appeared below as he guided Jean’s cock to his hole almost expertly, once Marco
got the head in Jean slammed Marco down entirely onto his hard cock.
Marco cried out, his hands slamming to his mouth as he whimpered erratically
into his hand. Jean lifted and dropped his lover onto his cock a few times,
Reiner watched the arousing sight, he caught muscles in Marco’s body twitch
each drop of his body.
“That’s… an awesome view, Jean but what the hell am I supposed to do? I don’t
really want to just jerk off to the sight, I mean…” Reiner gave a slow tug on
his cock itching to do something.
“What do you think?” Jean asked with a wide grin, he spread Marco’s cheeks
again opening his hole a little more to give the blond a clue.
Reiner’s eyes widened, “really?” he was stunned.
Jean took a hand away for a second then held out a container of oil, “just lube
it up good, buddy.”
Reiner took the container as he gulped, he took a generous amount of oil
coating his cock a couple times, he moved forward until his thighs were nearly
behind Marco’s thighs.
“Alright,” Reiner spoke quietly, Jean took his hands away to cup Marco’s hot
face, Marco’s usually perfectly combed hair was a sexy mess, his eyes half
lidded and his skin pink.
The head of Reiner’s cock was placed above Jean’s already buried cock and
against Marco’s asshole.
Marco made a low whimper again then his screamed moan increased when Reiner
started to push. Marco did his best to bite back his moans but the sensation
was too much, his eyes watered more as he stared down at Jean who spoke words
to him, words he couldn’t even understand.
Reiner’s brow furrowed and his mouth was open as he thrusted himself inside
alongside Jean,”fuckfuckfuck,” he huffed; they were both inside of Marco.
Marco’s whose cried became senseless babbles of words that no one could
recognize, Reiner gave an experimental thrust of his hips hissing at the tight
feel and at how his cock rubbed against Jean’s.
Jean groaned out a low noise that turned Marco on even more, Marco’s pre come
dripped out continuously onto Jean’s abs.
“Y-you’re an exquisite mess, Marco,” Jean commented with a hoarse voice, he
reached up again cupping Marco’s face, tears streamed from beautiful hazed
brown eyes, drool slipping from Marco’s mouth, Jean brought the male down
kissing him deeply as he bucked his hips up. His cock slid deeper pushing
Reiner out a bit.
Reiner gritted his teeth and thrusted himself deeper pushing Jean out a bit
this time. Although the time arose to begin another fight they worked the
rhythm out each taking turns to thrust into Marco relishing in the feeling of
slippery tightness and at how their cocks rubbed together.
Marco’s sobs of pleasure were pouring into Jean’s mouth. Jean tweaked hard
nipples before running down Marco’s burning body wrapping his hand around his
weeping cock.
“’m gonna come, Braun,” Jean groaned out against Marco’s open mouth.
“S-same,” Reiner gripped Marco’s hips as he continued this insanely pleasurable
pace with Jean.
Jean wanted Marco to come first so he started to pump Marco’s aching cock
eagerly, after a few stroked Marco choked back a strangled noise as he came all
over Jean.
Reiner grunted as his hips stuttered, his hot come spurting inside of Marco,
Jean however gave a particularly hard thrust into Marco’s prostate
overstimulating the poor teen, after Jean’s come mixed in with Reiner’s Marco
blacked out, his body slumping down onto Jean who was clearly astonished.
“Fuck, Marco? Babe?” Jean and Reiner pulled their cocks out of Marco, their
semen pouring out the briefly gaping hole.
“Oh shit,” Reiner moved closer.
They dubbed Marco alright so the two males worked together to clean up the bed
and Marco. Once they were all dressed Jean climbed into bed cuddling his lover
after Reiner left with a good bye.
-
The morning after however Marco had terrible body aches, he was blown away by
how last night escalated so quickly, he didn’t regret it but the pain was
awful, so he stayed in bed in the morning hugging pillows kindly taking all the
sweet pecks Jean offered before taking off to explain to the commander and
captain that Marco was under the weather.
Marco breathed softly as he shifted in the bed wincing at his muscles, “gosh,”
he sighed then the door opened making him jolt a little. He looked up expecting
to see Jean but he instead he saw Erwin Smith.
“C-commander!” Marco stammered as he struggled to get out of bed to salute.
“At ease,” Erwin chuckled as he stepped in shutting the door behind him with
his foot seeing as his hands were full.
“Commander?” Marco sat in the middle of the bed shocked.
“I heard you’re feeling ‘under the weather’, that right?”
“Y-yeah, yeah..”
“I brought you some things to help your back and throat, soon you’ll feel
better.”
Heat rushed to Marco’s face as he could tell Erwin knew what happened, “h-how’d
you know?”
Erwin sorted some things out on the nightstand, “well… I’ve dealt with a
similar situation,” he had a soft grin, “also as Jean explained I could see
Reiner standing nearby looking positively guilty.”
Marco scooted closer to the edge of the bed to get a better view of what Erwin
brought.
“Hange made most of these and they work well,” he picked up a small jar, “rub
this on your back.”
Marco took the jar shyly.
“How’d you end up in such a situation anyway?” Erwin crossed his arms,
“considering how old you guys are…” though he shouldn’t be one to talk, since
he was fooling around with a certain petite blond male.
“I guess you could say… I have a sweet tooth,” he smiled innocently.
 
Please drop_by_the_archive_and_comment to let the author know if you enjoyed
their work!