Posted originally on the Archive_of_Our_Own at https://archiveofourown.org/
works/6679303.
  Rating:
      Explicit
  Archive Warning:
      Underage
  Category:
      F/M
  Fandom:
      Avatar:_The_Last_Airbender
  Relationship:
      Aang/Katara/Sokka_(Avatar)
  Character:
      Aang, Sokka, Katara
  Additional Tags:
      Threesome, Incest, season_one
  Stats:
      Published: 2016-04-28 Words: 2013
****** Southern Traditions ******
by WestOrEast
Summary
     Katara has always wanted to continue the Southern Water Tribe's
     customs, including caring for the unmarried males. Aang and Sokka
     also approve.
Sokka looked up from his map as Aang wandered back into the camp they had set
up. The younger boy sat and leaned against Appa. The Air Nomad fidgeted,
swirling some sticks and dust in a small pattern while nervously glancing at
Sokka. Seeing Aang’s poorly hidden nervousness, Sokka sighed and looked up from
planning their route to the Northern Water Tribe.
“What’s the matter, Aang? Couldn’t find any sticks and leaves to eat? I’ve got
some nice jerky in my bag…” As he kicked his pack, Aang gave a wan smile before
looking around the clearing. Scooting closer to Sokka, he looked up at the
older boy with a serious, worried look on his face.
“Listen, Sokka… How well do you know your body?” Sokka gave Aang a long,
measuring stare, wondering both what he meant and what brought the subject up.
“Pretty… well? I’ve got my head and my hands and-“ Aang shook his head,
interrupting his friend.
“No, I mean, like your penis. Sex and stuff.” Aang’s eyes kept darting from
meeting Sokka’s gaze to briefly look at the ground, or the air, or other parts
of Sokka’s face.
Realization dawned on Sokka. He hadn’t expected to be giving the bee-bird talk
with anyone for several more years, but he remembered what his own father had
told him. HE cleared his throat, and assumed his “wise senior” voice.
“Aang, my friend, there comes a time when a boy becomes a man. He starts
growing hair in new places, and feeling strange-“
“No, no, Sokka, I know about sex. The monks taught us at the temple, and we
figured the rest out with each other.” He fidgeted some more. “It’s just, well,
there weren’t any girls at the temple, you know? They told us about how girls
are different from boys, but we only had each other and-“ Aang cut himself off
before starting again. “And I saw Katara
bathingintheriverandshewasnakedandsoprettyandIfeltfunny and…” Aang stopped and
panted for breath as Sokka sat back in surprise.
“That’s right, there were only men at the Southern Air Temple, weren’t there?
Okay…” Sokka sat back in thought, tapping his thigh in concentration.
‘Obviously woman are different from men. It’s right there in the name, for one.
I’m familiar with Katara’s body, bit I really think you should ask her about
it.”
Aang’s face creased in confusion, but before he could say anything, Katara
walked around Appa and sat down next to them. Even as she walked, she was
practicing her bending, pulling droplets of water out of her long hair.
“Ask me about what?” She glanced at both Aang and Sokka as she got comfortable
on the winter grass.
“Oh, Aang saw you naked and,” “Sokka!” “And was wondering about the differences
between guys and girls.” Aang had his head buried in his hands as Katara
lightly laughed.
“Is that all? Oh, Aang, I’d love to help you out.” Katara stood up, undoing her
top. The blue cloth fell down, revealing her dark, pert breasts. Sokka smiled
at the familiar sight, a heat stirring in his loins. Aang, on the other hand,
made a squawking sound of surprise and climbed halfway up Appa as Katara
slipped out of the rest of her clothes, before folding them up and placing them
to one side.
Chuckling, the older girl grabbed Aang’s hand and tugged him back down to the
ground. Sokka reached and pulled him down to sit next to him as Katara sat
cross-legged in front of them, hands folded in her lap.
“Aang, it’s alright. I’m used to being naked. You see, the Water Tribe has an
old tradition. The daughters of the chief are supposed to take care of all the
unmarried men of the tribe. Our mother did it before she married Dad, and I was
happy to carry on the tradition when I was old enough.”
“Yeah, but by the time she was, all the warriors had left, and it was just me,”
Sokka said.
“Not just you, Sokka,” Katara said reprovingly, “Some of the younger boys
wanted to try, but they always got too embarrassed to do anything.” Katara
smiled. “Sokka and I spent most nights in our tent with each other.” She put
her hands on Aang’s shoulders and looked him in the eyes, smiling.
“And I would love to include you in this, Aang. You’re a good friend, and you
deserve to enjoy this as much as Sokka and I do.”
One hand slowly slid down the young boy’s chest, stopping at his lower stomach.
Sokka could hear his breaths becoming faster and higher pitched.
“Sure thing, man. Katara’s real fun to have sex with. I’m sure you’d enjoy it
just as much as we do.” Sokka rested his hand on the middle of Katara’s back,
thinking of how nice it would be to squeeze her ass as she arched into him.
“Well, um, okay?” Aang looked unsure as he hesitantly agreed, but he also
smiled as Katara moved her hand lower.
Brushing against his growing bulge, she looked up at him questioningly, not
wanting to do something Aang wasn’t prepared for. Seeing his nod, she gave him
a warm smile, and grabbed his cock. Even through the layers of clothing, she
could feel the heat and stiffness.
Sokka stood up, giving Aang a backslap as he did. Moving behind Katara, he
pushed her down to all fours, and knelt behind her. He ran a finger along her
slit, looking at her arousal glistening against her dark, flushed skin.
Spreading her lips apart, he leaned down and drew his tongue up her core,
collecting her wetness on his tongue.
Swallowing, Sokka pulled down his pants and fished out his cock. Sliding it
between Katara’s cheeks, he looked up to see his sister kissing Aang as she
fumbled with the Avatar’s clothing. He sighed, feeling his hard cock sliding
against Katara’s soft, smooth skin. Sokka squeezed her ass as his dick slid
back and forth, sandwiched by her cheeks.
In her lust, Katara pulled down Aang’s pants, almost ripping them off of him.
His fully erect cock, freed from its confines, hit her face. Katara giggled,
her pink tongue darting out to quickly lick his shaft. Using one hand to steady
herself, she grabbed Aang’s dick with her other, and kissed the tip, looking up
at him with mischievous eyes.
“Katara…” Aang murmured as Katara slid his cock into her mouth. As she slowly
slid down to the base, his hands reached out to grab her shoulders. Katara had
long since gotten over her gag reflex, and took Aang’s cock easily. Even at his
base, she made sure to keep looking in his eyes as she slid back and forth
along his dick.
Behind them, Sokka tired of playing with his sister’s ass, and was ready for
the real prize. Grabbing her hips, he guided himself in till the head of his
cock just barely parted Katara’s folds. Her juices trickled down his shaft as
he slowly thrust himself forward and back, never really entering his younger
sister. Over a year of experience had shown him what his sister liked, and he
knew how to work her up before letting her collapse in a well-earned orgasm.
“Sokka, stop teasing me!” Katara reluctantly stopped sucking on Aang’s cock,
craning her head to glare at Sokka. One hand continued to stroke the Avatar as
she squabbled with her sibling. “Fuck me like a real man!”
Grinning, Sokka thrust his hips forward, spearing Katara on his penis. She made
an “oh!” sound as her eyes crossed, her teenage pussy filled up. Aang’s
tightening grip reminded her of him, and she resumed her blowjob of the Avatar
as her brother filled her up. Her nipples were hard in arousal, and her small
breasts were swaying with how hard she was being fucked.
Raising one hand up, Sokka swung it down, hitting Katara’s ass. She moaned
around Aang’s cock as he spanked her again, and then again. With every smack,
her pussy tightened around Sokka’s cock, and arousal squirted out against his
thighs.
“Ka- Katara, your mouth!” Aang was panting, and his knuckles were white as they
clenched at the older girl’s shoulders. She hhmm’ed in amusement, the
vibrations feeling good against Aang’s penis. Long nights of practice meant she
knew how to use her tongue, lips, and throat.
Katara had never felt so full, with Aang filling her mouth with his decently
sized dick, and her brother pounding her pussy while still spanking her. She
had gotten herself off before, two fingers plunging in and out while she sucked
her brother off, but that couldn’t begin to compare to what she was feeling
now. And kneeling in the dirt like an animal while she was fucked from both
ends… She picked up the pace, her head bobbing back and forth along Aang’s
length while her brother matched her efforts, his thighs smacking hers with
every thrust.
“Katara, I’m, I’m!” Aang didn’t say he was ready to cum, but Katara knew what
he meant. Taking his entire rod into her mouth, she pressed against him with
her tongue, eager to feel him shooting gown her throat, and to taste the
remnant as he left her mouth. Meeting his eager gaze, she smiled as best she
could as his eyes closed and his cock twitched in her mouth.
Aang groaned as he shot stream after stream of cum into Katara, working off a
century’s worth of lust with the brown-skinned girl. He reluctantly pulled out
of her mouth, semen leaving a sticky trail across her tongue and lips, one
strand dribbling down her chin before she licked it up. Katara didn’t have time
to luxuriate in the feeling of the warm, sticky mass in her stomach and mouth
as her brother continued to fuck her from behind.
Sokka huffed as Katara tightened around him as Aang came into her mouth. He
knew his sister always had a thing for giving blowjobs, and it was nice to feel
her excitement as she was wrapped around him. Smacking her ass again gave a
delightful jiggle as her cheeks slowly turned red from the repeated blows.
As he fucked his sister, Sokka could feel himself getting close to the edge. It
was faster than normal, but given the new situation, that was to be expected.
Feeling her squeeze down on him was the last straw. Spanking her one last time,
he thrust his hips forward and buried himself as deep into Katara’s wet,
willing cunt as he could. His back arched as he unloaded into her.
Katara breathily moaned as her brother came into her, triggering her own
orgasm. Her arms gave out, and she would have fallen into the dirt if Aang
hadn’t caught. She shivered in delight as her pussy was filled with Sokka’s
cum. Her breath hitched as Sokka softly, slowly rubbed her red, tender ass as
he pulled out of her.
As Sokka pulled her back to rest against him, Aang followed, leaving Katara
sandwiched between her two lovers. The position left her legs open, letting her
brother’s seed slowly trickle out of her and run down her legs. She sighed in
contentment, feeling the aftershakes of her orgasm run through her body, and
the warmth of Aang and Sokka.
In front of her, Aang’s eyes fluttered closed, exhausted, while Sokka traced
patterns on her flushed, sweaty skin. She leaned down to kiss Aang, before
pressing her lips briefly against her brother’s hand. She sighed in
contentment, feeling tired herself. Leaning into her brother’s embrace, she
closed her eyes and drifted off to sleep.
Behind the two, Sokka tried to get to a more comfortable position against Appa.
He was glad that Aang so readily accepted the customs of the Southern Water
Tribe, and wondered if there was anything similar in the Air Temples Aang would
be willing to show them. Leaning to one side, he made a grab for the map he had
been studying. Their route to the north wouldn’t plan itself, after all.
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