BEAST
pairing: jake sully x male reader
synopsis: A scientist who lives for data and a Marine who lives to break things get stuck in a messy situation after Jake whacks a plant like a total dumbass. Now they have to deal with the physical fallout of a pollen trap while trying not to kill each other in the proces (or something more).
content warnings: 18+, smut, bottom male reader, scientist!reader, who also has an avatar, sex pollen trope, unnatural avatar biology (dont question it), fingering, oral sex (reader recieving), p in a, unintentional mating, creampie.
word count: 1.3k words
a/n: the title is the song from all the avatar 3 jake edits lmaoo. now watch me disappear again bye
The humidity in the Hallelujah Mountains made the air feel like wet wool. Every breath you took smalled like the damp forest floor, a constant reminder that you were miles away from the sterile, air-conditioned safety of the base. You adjusted the strap of your sampling kit, trying to ignore the heavy thud of Jake’s boots behind you. You were a senior lead in the xenobiology department, a man who had built his career on being the most capable mind in the room, but currently, you were stuck being babysat by a guy who thought the forest was just a target range.
"You're going to walk into a cliff if you don't take your eyes off that tablet, Doc," Jake said. His voice had that casual arrogance that always made your blood boil.
"And you're going to trip over a root if you don't stop staring at the back of my head," you shot back without looking at him. "This is a sensitive collection, Jake. It requires focus. I don't expect a grunt to understand the value of precision."
Jake let out a short, breathy laugh. He stepped over a glowing vine, moving with a grace that honestly annoyed you. He reached out to swat away a cluster of hanging, purple bulbs, his movements reckless in his boredom. "What's this one do? Aside from taking up space?"
"Jake, don't touch the—"
A sharp hiss cut you off. A cloud of fine, gold dust erupted from the plant, hitting both of you square in the face. You coughed, waving your arms through the shimmering haze, but the air already tasted sweet. It was a thick, cloying scent like overripe fruit.
"Fantastic job, hero. You just triggered a pheromonal defense mechanism," you growled, wiping the dust from your eyes.
"I didn't mean to set it off. Relax," Jake said, though his voice trailed off. He rubbed his chest, his pupils beginning to blow wide. "Is it just me, or did it get hot out here?"
A sudden, sharp heat coiled in your lower belly. It was a prickling sensation that made your skin feel too tight. You fumbled for your comms unit, your fingers feeling heavy. "Norm? Come in. Sully just set off a Venera-Spora. Gold dust. We’re feeling a reaction."
Norm’s voice crackled through the earbud after a second of static. "The gold dust? Oh man. You guys are in trouble. That’s high-potency sex pollen. It targets the neural pathways for arousal. The itch won't stop until the receptors are satisfied- like, fully satisfied. Good luck-"
The line went dead with a final click. You stared at the unit in disbelief. "Norm? Norm!"
You turned to Jake. He wasn't looking at the trees anymore. He was looking at you with a gaze that had stripped away the sarcasm, replaced by a sort of... hunger. He straightened up, a slow grin spreading across his face despite the sweat beading on his brow.
"Well, Doc," Jake rasped, his voice dropping an octave. "You heard the man. Scientific necessity."
"Don't act like this is a favor," you panted. The heat in your groin was becoming a throbbing weight.
"I'm a Marine. I follow orders," he quipped, moving toward you with a swagger that felt like a challenge. He reached out, his hand catching the back of your neck. The contact felt like lightning. Your Avatar’s body was already reacting to the pollen. Your hole felt slick, an unusual biological response that made every movement feel lubricated.
Jake pushed you back against a mossy stone floor, his hands sliding down to your hips, pushing your pants and boxers right off. "You're already wet," he noted. He knelt between your legs, his fingers finding the entrance of your hole and sliding in with startling ease.
The pollen had made your walls soft. The natural slickness made the entry of three thick fingers a seamless, squelching intrusion. You threw your head back, a broken moan escaping you. Jake watched you, his golden eyes glowing as he stretched you out. One of his digits rubbed against your prostate with a precision that felt way too intentional.
"Still want to talk about the data?" he teased, before leaning down.
He took you into his mouth with a hunger that was both generous and demanding. His tongue swirled around the head of your cock while his fingers continued to work you open, creating a loop of pleasure that threatened to short-circuit your brain. You reached for him, your hands tangling in his hair- dangerously close to his kuru, pulling him closer as the intensity of the pollen pushed your sensory limits.
When he finally stood up, his own cock was out, a pretty blue shade with bioluminescent freckles all over. He didn't use any more words. He hauled your lower body properly to the floor and lined himself up.
He slammed into you in one long thrust.
The air left your lungs. He was so thick he felt like he was splitting you in two, his length bottoming out with a force that made your vision go white. The tsaheylu happened in the chaos, your braids tangling and locking together by pure instinct.
The silence that followed was heavy. Through the bond, you felt his raw need to claim you, and he felt your desperate surrender. It was a mutual agreement. You wrapped your legs around his waist, locking your ankles behind his back, and pulled him deeper.
Jake began to move with a relentless pace. Every time his hips slammed against yours, the sound of skin slapping on skin echoed through the clearing. You could feel the shape of him inside you, his cock filling every corner of your raw, slicked-out hole. Through the link, the pleasure was doubled. You were feeling your own walls clenching around him at the same time you felt the crushing tightness of your heat from his perspective.
You were both lost in it. He leaned down, his teeth sinking into the sensitive skin of your shoulder as he maintained a rhythm that left you completely unstrung. You were drooling, your eyes rolled back, your fingers buried in the muscles of his back as you rode the waves of the pollen’s influence.
The itch was fading, replaced by a unbearable pressure. Jake’s breathing turned into a series of ragged snarls, his movements becoming more frantic as he felt the mating bond start to solidify. He wasn't just fucking you anymore. He was marking you.
"Now," he thought through the link.
He surged deep one last time, his hips locking against yours as his knot began to swell. You felt the first hot spurt of his cum hit your internals, and the sensation sent you over the edge. You screamed into the quiet of the forest as your own orgasm ripped through you, your walls convulsing violently around his length. He held you there, pinned to the ground, as he emptied himself into you in long, pulsing throbs, filling you until you felt bloated with his seed.
You stayed locked together for a long time, the only sound the ragged gasps of your breathing. The haze was gone, replaced by exhaustion. You looked up at him, and for the first time, you didn't have anything to say.
- - -
The walk back to Hell's Gate was a nightmare of sore muscles and awkward glances. By the time you reached the lab, you just wanted to crawl into a bunk and sleep for a week. Norm was leaning against the main console, holding a mug of coffee and looking entirely too pleased with himself.
"Back so soon?" Norm asked.
"Shut up, Norm," you muttered, heading for the lockers.
"Hey, just a heads up for next time, Sully," Norm called out. He pointed to the comms unit on Jake’s vest. "The mute button only works if you actually press it. The whole bridge got to hear your scientific progress. Especially the part about the Doc being a slut for a Marine. Very descriptive, Jake. Ten out of ten."
You froze, the blood draining from your face as Jake’s jaw dropped.
"The recording is already in the archives," Norm added with a grin. "I think they’re planning to play it at the next staff briefing for educational purposes."
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