Thread by @sluttyrogers

(#sheith, monster shiro, trans human Keith, afab and amab language, hints of noncon in keith's fantasy, breeding, light slutification (is that a word?), light degradation, choose your own adventure!)

Keith loves wandering in the woods behind his house.

They sprawl for what feels like eternity in every direction, so far from the next property that Keith can walk for hours without seeing another person. That's basically all he does these days, with quarantine and all--his college classes are all online, so once he's done--

--his work for the day, he packs himself a lunch in his simple backpack, grabs a little jar in case he finds something cool (some stream water, a plant he can replant or propagate) and heads out. He doesn't even bring his phone, much to his mom's concern.

It's the beginning of spring, and of course that means it's the perfect time for a walk. He gathers his lunch and his jar and his pocketknife in his backpack, and puts on boots and a loose cotton dress with leggings underneath, and makes for the woods.

Maybe his favourite thing about being amidst nature is its sense of perpetual motion. It goes on without him, untouched. When he's in the woods, he's a visitor, and the plants and animals don't notice him come or go; they're the same always, observed or not.

The edges of the woods are populated by the usual suburban wildlife; chittering squirrels, songbirds and cross, bunnies and the odd stray cat. Deeper in the woods are snakes and deer and hawks, badgers and foxes even, or wolves if he stays out too late. They congregate--

--around the robust stream that slips between the trees, though on this day, when Keith sits on the stump by the water to crrature-watch, he's alone. He wonders where everyone is, what's keeping the usually busy stretch of stream so quiet, and that's when he sees it.

Or rather, maybe, him. Humanoid, two arms, two legs. Crouched by the stream drinking from cupped hands, wearing what looks like a deer hide around its waist. He's maybe 10 feet away and a little upstream from Keith, but even from this distance Keith can tell he's not quite--

--human. He knows how it sounds, but his fingers are just a little too long, his shoulders just a little too broad, and there's something about his posture that just...Keith's skin crawls a little, though he's not sure with what, exactly.

He stands up from the rock he was--

--sitting on and carefully starts to slink deeper into the woods, better, he thinks, not to be noticed by the creature. He has to keep one eye over his shoulder, though, on it, and while he's not looking he trips over a root and starts to fall.

He hears a sound, only for an instant, like feet crunching over leaves, and he sees a smear of warm purple-grey and then he's falling into something, something hot and broad. He looks up to find himself in the creature's arms.

(Okay, this is why this thread has been cooking for so long: at this point, the thread branches, with knotty shiro in one branch n tentacle/ovi shiro in another! So basically, there's gonna be two replies to this tweet--pick one and enjoy!)

(Knot!Shiro ahead!)

His broad chest is covered in soft, warm fur, and he smells like the woods. Keith steps back; "Sorry," he manages, a little breathless. He's always kind of thought that there were bigger things than wolves and wildcats in the woods, but now he's sure.

"Thanks," he says, stumbling backwards. "I'm gonna--I won't come back this way." The creature pursues him; he's huge, but somehow, Keith isn't intimidated. He sniffs the air, his nostrils twitching and flaring, head back like...well. Like a dog. He moves faster now, and Keith--

--moves faster, too, until he trips on a stone and tumbles on his ass into the creek. The creature's on top of him in an instant, and it's tucking its nose in Keith's neck and smelling him, and Keith is shuddering despite himself. This thing is so big, whatever it is, and Keith--

--won't deny that the thought of...the way they're positioned...he's dabbled in some "unusual" erotica in his day, and this feels like a moment from that. "Can you let me out of the water?" Keith asks, because it's cold but he doesn't want to move unexpectedly--he's afraid of--

--what the creature is gonna do to him, which is, honestly, pretty hot unto itself. The thing has at least a foot and 50 lbs on Keith, and Keith knows that whatever the thing wants out of him...he's gonna get it.

One way or another, Keith thinks, which boils a little heat low in his belly. He's going to give it, willingly, he decides, as he listens to the gentle "whuff, whuff" of the creature's breath in his ear. It unfurls a long hot tongue and laps the sweat and salt off his skin.

"Let me get out of the water," Keith coaxes. "Not gonna go anywhere. Promise. Just up to the bank." The creature eases off, sits on its haunches, and Keith climbs the bank, his back soaked from the cold creekwater. He doesn't expect to be tackled to the ground, but then he--

--feels the creature on him, knocking him onto his stomach in a patch of soft grass. He can hear the wag of the creature's tail--it has a tail, apparently--as it whaps through the air, and when Keith turns his head he sees it smiling and panting lightly over him, playful.

He laughs. "You wanna play?" He can feel the weight of it bearing down on him; he grinds his hips up and back, and fuck. It's thick, hard, with a bulge at the base. It fits him perfectly, rides between his asscheeks and against his pussy like it was meant to be there.

He makes a little whimper, cheek pressed against the soft grass as the creature scents him again. It responds with a rumbling growl that Keith can feel in his chest, rutting down on him. "Let's play, then."

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