
Posted originally on the Archive_of_Our_Own at https://archiveofourown.org/
works/776400.
  Rating:
      Explicit
  Archive Warning:
      Underage
  Category:
      M/M
  Fandom:
      Teen_Wolf_(TV)
  Relationship:
      Derek_Hale/Stiles_Stilinski
  Additional Tags:
      Bestiality, Knotting, Barebacking, Size_Kink, Xenophilia
  Stats:
      Published: 2013-04-27 Words: 1267
****** Just Keep Breathing ******
by mysecretashes
Summary
     The first time Derek takes the Alpha form, it goes a lot differently
     than Stiles expected.
Notes
     Expanded version of my entry for Challenge 1 at Mating_Games.
     They don't discuss it beforehand, but everything is consensual. :)
They fuck first, because Derek says the scent will help keep him anchored.
Stiles isn't sure that's true, but he pushes Derek down on the bed and rides
him until he comes all over Derek's stomach and Derek is spilling deep inside
him.
*
They go out to the old Hale house and Stiles makes a circle of Mountain Ash,
Derek standing naked in the center. Once it's closed Derek starts pacing from
one side to the other, eyebrows drawn in concentration. Stiles watches, quiet.
He's worried Derek won't be able to do this, but also worried he will.
When the shift finally begins Stiles stops breathing. It's both amazing and
terrifying; Derek's body shakes and twists and grows twice his normal size,
black fur covering pale skin. Derek's eyes glow red, his face contorting into a
wolf-like snout, sharp fangs snapping dangerously.
Stiles can't look away as Derek drops to all fours and paces the edge of the
ash circle, powerful muscles shifting beneath his fur. He stops when he reaches
Stiles, staring at him with blood red eyes. Derek's Alpha form looks nothing
like a regular wolf, huge and frightening and the most beautiful thing Stiles
has ever seen.
He reaches out slowly and Derek huffs, nosing at his hand when it crosses the
ash. Stiles draws in a sharp breath, fingers carding through silky fur, and
Derek leans into his hand before stepping away. Stiles doesn't think about what
he's doing, just follows him, stepping into the circle and away from the
assurance of safety.
Derek growls and Stiles freezes, heart racing, but then Derek is reaching out
and carefully taking the open edge of Stiles' plaid shirt in his teeth, tugging
him further in. When they reach the center Derek leans against Stiles, pushing
his weight into him and making him go sprawling on the leaf-covered ground.
Stiles stares up at Derek with wide eyes, more confused than anything else.
Until Derek starts nosing at the crotch of his jeans, rubbing his snout along
Stiles' soft dick. Stiles lets out a strangled noise and tries to scramble
back, but Derek presses one huge paw to his chest, holding him in place. He
rubs his nose harder against Stiles' dick and Stiles flushes, feeling himself
start to grow hard. He swallows; this wasn't part of the plan, but oh god,
fuck, he wants it.
"Okay," he says, toeing off his shoes and slowly reaching for the button on his
fly. "Just let me – I want to –"
Derek moves back and watches as Stiles undresses, now achingly hard. As soon as
he's naked Derek steps forward again and licks over Stiles' dick with his
tongue, making Stiles gasp and buck his hips. It's soft and amazing, and Stiles
groans, wondering if he'll ever be able to see Derek's Alpha form after this
without getting turned on.
"Is this what you wanted?" Stiles asks when his dick gives a hard twitch under
Derek's tongue. "Because I'm about to come, and I don't know if you – I mean,
I'm okay with more –"
Derek huffs and pulls back. Stiles feels a spike of disappointment, but then
Derek nudges insistently at his hip and Stiles moans, immediately rolling over
and lifting his ass in the air, spreading his knees. Derek moves behind him,
snuffling at where Stiles' hole is still open and wet from earlier. His paws
come down on either side of Stiles' head, huge body covering Stiles completely,
his dick rubbing over Stiles' ass, and oh god, that's bigger in this form too.
Stiles makes himself relax and just keep breathing as Derek pushes in,
stretching him wider than he's ever been stretched before, filling him so full
he thinks he might burst. It hurts but it also feels really fucking good, and
his lips part on a whimper. Soft growls are echoing from above him, and Stiles
is pretty sure his own dick is hard enough to cut diamonds, leaking pre-come
onto the ground below him.
When Derek is finally all the way in he pauses. He's stretching Stiles so wide
Stiles' legs are trembling, body trying to clench down around the huge
intrusion, and Stiles can barely believe it all fits. Stiles moans, and Derek
must take that as permission because he starts snapping his hips, hard.
Stiles cries out, arms collapsing at the force. He is literally being fucked
into the ground by a huge-ass werewolf, and it's the hottest thing that has
ever happened to him. Derek's thrusts are wild and abandoned, animalistic, his
claws digging into the dirt next to Stiles' face, and all Stiles can do is
clutch at his hair and fucking take it. He makes choked-off noises, eyes
tightly closed, and he's not going to be able to walk properly for days.
Stiles almost stops breathing when he feels Derek's dick start to grow even
bigger right at the base, tugging at Stiles' rim with each pull out, and he's
not sure why he didn't think this might happen. Derek has knotted him before,
not every time but often enough, and Stiles groans with nearly overwhelming
pleasure as he thinks about being tied to Derek like this.
Derek slams inside one last time, shoving the still-growing knot in as hard as
he can, and Stiles shouts a surprised curse as he comes. His body shakes, dick
jerking as he coats the ground in strips of white. It's intense, his stretched
out hole clenching around Derek's huge dick, knot pressing against his prostate
and making his vision blur.
Above him, Derek pants loudly, and Stiles can feel every pulse of his dick as
he fills him with hot come. The thought makes him shiver with renewed arousal;
there' s going to be so much come everywhere when Derek is able to pull out.
That won't be for a while, though, so for now Stiles shifts, trying to lie down
flat, and Derek carefully moves with him.
"I love you," Stiles says, words slurred, and he's never said that before but
he means it, oh god, he means it.
Derek whines, the sound happy, and snuffles along Stiles' jaw until he can lick
at Stiles' mouth. Stiles laughs giddily and reaches up to scratch his fingers
through Derek's fur, body thrumming with the afterglow, enjoying the feel of
Derek locked inside of him.
*
Eventually, Derek's knot shrinks enough that he can pull out. A gush of come
follows him, wetting Stiles' balls and thighs, and Stiles whimpers when he
feels the soft lap of Derek's tongue against him. Derek pulls back and Stiles
rolls over, watching as he shifts back into his human form.
"Are you okay?" Derek asks, voice rough and eyebrows drawn together.
"I'm perfect," Stiles says with a grin, stretching. His ass twinges and he
hums, reaching out for Derek. "Come here."
Derek curls around him, arm tight around Stiles' waist and nose pressed against
his neck. "I didn't mean for that to happen."
Stiles bites his bottom lip, fingers tangling in Derek's hair. "Do you regret
it?"
"No," Derek says, fierce.
"Then stop worrying, because I don't either." Stiles tugs at Derek's hair until
he looks up at him. "It was fucking amazing, and something I would love to do
again. You know, after my ass recovers. If you want to."
Derek studies his face, hand sliding up to cover Stiles' steady heart. "I do."
"Good," Stiles says. "Now help me up so we can go back to your loft and sleep
on a real bed."
Derek huffs out a laugh, and kisses Stiles until they're both breathless.
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