
Posted originally on the Archive_of_Our_Own at https://archiveofourown.org/
works/3570377.
  Rating:
      Explicit
  Archive Warning:
      Underage
  Category:
      M/M
  Fandom:
      Big_Hero_6_(2014)
  Relationship:
      Hiro_Hamada/Tadashi_Hamada
  Character:
      Hiro_Hamada, Tadashi_Hamada
  Additional Tags:
      Sibling_Incest, cloning, Age_Swap, Threesome, Double_Penetration,
      older!Hiro, Young!Tadashi, top!Hiro, bottom!Tadashi, Plot_What_Plot/Porn
      Without_Plot
  Stats:
      Published: 2015-03-18 Words: 1805
****** Why Not Both? ******
by hiroandashicrap
Summary
     Age Swap AU!
     Tadashi rubbed his eyes furiously and then stared at the two figures
     in front of him in surprise. His eyes wandering from his older
     brother Hiro…
     To his older brother Hiro?
     "…Unbelievable. What happened here?"
      
     In which Hiro accidentally clones himself, Tadashi discovers it and
     they have a good time.
Notes
     Enjoy!
Tadashi rubbed his eyes furiously and then stared at the two figures in front
of him in surprise. His eyes wandering from his older brother Hiro…
To his older brother Hiro?
"…Unbelievable. What happened here?"
The Hiro who was looking through some papers on his desk sighed. “I screwed up
the damn cloning machine and the result is him.” He grumbled, gesturing at his
clone who was lounging on his bed. Clone!Hiro simply looked up and smirked then
waved lazily. “Hey little bro.”
Tadashi stared at the clone in awe before excitedly making his way across the
room and sat down beside the clone. Before Clone!Hiro could even open his mouth
to speak, Tadashi was a few inches away from him as he studied his features
from up close.
"Wow Nii-san. This is far from a screw up! The cloning process worked
perfectly. He is the same down to the last detail!" He said in an enthusiastic
tone. Everything about him was similar; his chocolate brown eyes, the unruly
black hair and the ridiculous tooth gap.
Before he could pull back to study him further, he felt lips crushed against
his in a dominating kiss. “M-mph?!” Tadashi’s whole face exploded in a crimson
hue at the clone’s action but he couldn’t help the wave of pleasure that ran
through him.
"What the fuck.. Hey hands off!"
Clone!Hiro broke the kiss to stare at his twin with a mischievous smirk. “What?
I know you liked it.”
Hiro glared at the other, irritation showing on his face. Of course, he liked
it but he still couldn’t help but feel a little jealous because-even if it was
his clone-it wasn’t actually him doing that stuff to Tadashi.
"He’s mine. You’re not allowed to touch him."
"Last time I checked, we’re the same person." Clone!Hiro hummed in deep thought
as he looked down at Tadashi’s adorable blushing face. He brought his thumb up
to the other’s lips and stroked it. "That reminds me… Why don’t we both go down
on him?" He said with a smirk.
Tadashi swore his face was going to become a tomato permenantly.
"Nice offer. But I won’t do anything my little brother is uncomfortable with
you ass."
"Stop calling yourself an ass, ass.”
"I-I wouldn’t mind."
Both of them stopped arguing and stared at the younger one who was looking down
shyly while clutching the fabric of his pants. Hiro sat down next to him and
placed a hand on his shoulder.
"Tadashi… Are you sure?"
The younger one nodded slowly. “Aunt Cass is gone out. So we have the house to
ourselves and… uh I really want to help you relax Nii-san. Y-you need a break.”
He mumbled.
Both Hiros blinked and smiled at the younger’s adorable behaviour. Then they
looked at each other with a smirk and nodded before Clone!Hiro pulled Tadashi
close to him; the younger one sitting between his legs with his back pressed
against the other’s chest while Hiro crawled up to him and stroked his cheek,
before leaning down to kiss him feverishly; his tongue brushing against the
other’s before tangling together as the kiss got even more heated.
"Don’t worry. We’re gonna make you feel so good.” Clone!Hiro whispered huskily
against Tadashi’s ear, nipping at it to make him shudder. The younger one felt
the clone’s large hands underneath his shirt; stroking his skin before one hand
reached up to pinch his nipple while the other slipped inside his pants and
gave his swollen cock a gentle squeeze.
“Mmmh~”
Hiro broke the kiss after a while to catch his breath and stared at his little
brother. The image in front of him was far too erotic; Tadashi was moaning
wantonly and staring back at him; eyes glazed with lust and trail of saliva
running down his chin while his clone had already pulled out the other’s
erection and was now stroking it.
“Fuck…”
Clone!Hiro couldn’t help but chuckle at his twin’s flustered state. “Hot
right?” he grinned and started stroking faster, making Tadashi gasp and arch
into his chest.
"A-ah…Ah…Hiro"
The pleasurable sounds that came from Tadashi’s mouth made Hiro’s cock twitch.
He licked his lips and reached forward to brush his thumb over the other’s tip,
smearing some precum over it and let himself smirk when Tadashi whimpered.
“Let’s make it even more ever more hotter.”
It didn’t take long for Tadashi to be stripped off of all his clothing. His
skin feeling hot as ever as he looked up nervously at the now naked twins. He
wanted to do this. He knew it was going to be intense but he didn’t mind
because it was Hiro; his big brother.
And it may also have something to do with a dream he had a few days ago.
He blushed slightly when he recalled it.
“On your hands and knees little bro~” Tadashi nodded and complied. He felt his
ass cheeks being spread wider and couldn’t help but feel embarrassed at being
exposed like this but also excited at what would happen next.
His breath hitched when something long and slick entered him; Hiro’s finger he
concluded. It buried itself deep within him and then Hiro expertly curled his
finger to brush it against that spot which always made him spasm with intense
pleasure.
"Ohhh Haaaa~"
Tadashi’s arms and legs started to feel like jelly; they gave out underneath
him but Hiro held him up by his hip. He buried his face in the comforter under
him, letting the waves of pleasure consume him as he panted and moaned
uncontrollably.
Then he felt a hand on his chin lift his face up and the other Hiro-which he
assumed was the clone-came into his view who looked down at him hungrily and
brought his length in front of his mouth.
"Suck." Clone!Hiro growled to which Tadashi eagerly opened his mouth and
wrapped his lips around the tip, sucking as his tongue swirled around the tip.
Clone!Hiro groaned, and slowly thrusted his hips forward, face fucking his
little brother.
Tadashi let out a choked sob when another finger was shoved into him and he
felt Hiro place soft kisses on his lower back. The fingers inside of him
brushed continuously against his prostate making him moan loudly around the
clone’s cock which he sucked more furiously as spit started to trickle down his
chin.
He couldn’t take it anymore. He wanted more. He wanted Hiro inside of him.
He wanted both of them inside of him.
Tadashi pulled back; letting the other’s length go with a ‘pop’ and threw his
head back, moaning loudly. “P-please Ah! Ah! Please Hiro! I want you…I…ha want
you both please!”
Hiro stopped his ministrations and both looked at the younger in surprise who
whined and started rocking his hips on the fingers.
"Tadashi… I don’t want to hurt you-"
"Look he said he wants both of our dicks so let’s just give it to him."
Hiro glared at his nonchalant clone angrily for interrupting him. “Shut the
fuck up and let him decide.”
"Yes-yes please Nii-san please…!"
Hiro nodded, ignoring his clone’s smug expression as he added another finger
inside Tadashi and tried to stretch him to make the experience as less painful
as possible. He pulled away after making sure he was prepared.
"Come on." Hiro gently picked up Tadashi so that he was sitting on his lap
then, not-so-gently, tossed the bottle of lube to his clone. "Here."
He then laid down on his back with Tadashi on top of him and gently lifted the
other’s hips then shifted so that his length was brushing against his entrance.
He brought the other’s hips down until he was fully sheathed inside of him and
groaned at the feeling of his little brother’s tight heat and started rolling
his hips making the other moan. Tadashi craned his neck to look at Clone!Hiro.
He couldn’t wait any longer.
“H-Hiro please…” The younger one whimpered; referring to the clone who crawled
over so he was behind the younger and gently ran his tongue along Tadashi’s
spine before pushing him down so he was laying on his twin’s chest.
“I’m here baby.”Clone!Hiro whispered before reaching out to spread his ass
further apart and positioned himself.
“You ready?” Tadashi didn’t know which one of them had asked but he nodded and
then felt Clone!Hiro’s cock push inside of him and his eyes screwed shut with
tears starting to fill up and he bit his lip harshly to prevent himself from
screaming at the intense burning of being stretched so much.
Both Hiros waited for Tadashi to adjust; trying to calm him down with soft
kisses on his back and by stroking his hair gently. It wasn’t until a few
minutes did Tadashi seem to relax and they both nodded at each other before
thrusting rhythmically in and out of him.
It was nothing like the younger Hamada has ever felt. The waves of pure bliss
running through him was indescribable. His mouth hung open as he couldn’t make
up any words to say. It felt amazing how both their cocks slid in and out of
him.
“G-ga..Haaa~”
“Ha…Do you like that Dashi? Do you…fuck… like being filled with our cocks?”
Clone!Hiro breathed out, giving a particular sharp thrust which made the
younger one squeal and nod quickly.
“P-please…”
“What… do you want Tadashi?’ It was the real Hiro this time who growled against
his ear.
“I-I want you-you ah! f-faster. F-faster” They both happily complied to the
younger’s request and increased their pace and Tadashi’s eyes snapped opened
wide as he threw his head back and screamed.
“O-oh God Hiro!”
He reached his limit as a few quick thrusts send him over the edge; his swollen
cock spurting out cum on his and Hiro’s chest and he collapsed onto his chest
breathing heavily and listening to the groans and grunts of the other two as
they thrusted frantically.
It wasn’t long until both of them reached their limit as well; Clone!Hiro
quickly pulled out, stroking himself and shooting his seed on the younger’s
back with a grunt while Hiro gave one last thrust and came inside of him with a
shudder and groan.
All three of them were panting as they tried to catch their breaths, enjoying
the afterglow. Tadashi felt weird at being covered in cum but nonetheless
sighed contently and snuggled into Hiro’s chest as the other wrapped his arm
around him.
The room had fell into a comfortable silence, only sound being that of their
frantic heartbeats and breathing.
However that didn’t last long.
 “So…Ready for round two?”
And now Hiro was glad that clones had a very short life span.
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