Posted originally on the Archive_of_Our_Own at https://archiveofourown.org/
works/508458.
  Rating:
      Explicit
  Archive Warning:
      Underage
  Category:
      M/M
  Fandom:
      Supernatural
  Relationship:
      Adam_Milligan/Dean_Winchester/Sam_Winchester
  Character:
      Adam_Milligan, Dean_Winchester, Sam_Winchester
  Additional Tags:
      Alpha/Beta/Omega_Dynamics, Knotting, First_Time, Mating_Cycles/In_Heat,
      Alternate_Universe_-_Werewolf, Prompt_Response, Threesome_-_M/M/M,
      Sibling_Incest, Podfic_Welcome
  Collections:
      The_Adam_Milligan_Prompt_Fest_-_Round_1
  Stats:
      Published: 2012-09-10 Words: 290
****** First Heat ******
by astrild
Summary
     Sixteen-year-old Adam experiences his first heat. Luckily, he has his
     brothers to help him through it.
Notes
     This isn't entirely true to the prompt. I hope you enjoy it anyway. I
     intend to take another stab at this prompt before the fest is over.
Everyone has assured him that an omega's first heat is always mild—a sweet
taste of the pleasure to come as the body makes that final transition from
childhood to adulthood. Adam wonders if there might be something wrong with
him, because what he's experiencing at the moment could never be described as
"mild." Not unless "mild" is synonymous with "unrelenting, agonizing torment."
His skin burns under his brothers' merciless hands as they slowly work him
over, mapping out and claiming their territory (as if the fact of their
possession is something new). Adam's curses and demands died out long ago,
forgotten in the wake of wet kisses and the endless litany of filth in his
ears. No matter how he squirms or whimpers or whines, they will not be swayed.
They are alphas. They will give their omega bitch what he needs when they feel
he needs it and not a moment before.
"Dean," he sobs when a thick, calloused thumb presses into the slick mess of
his dripping hole.
"Sam," he sobs when teeth bite viciously down on one oversensitive nipple.
"Hush, baby brother. We've got you."
And then Dean is finally pushing in, splitting Adam relentlessly open on his
cock, and he's so huge, so impossibly huge that it hurts, but he wants it more
than anything else in the world. Wants Dean's cock and Sam's—both of them,
always. Wants them to knot him, to fill him with their come until he's fucking
drowning in it. Wants to do it all over again under the moon, in their fur.
"To whom do you belong?"
"You," Adam moans. "Alphas. My alphas."
And he doesn't want that to change. Not ever.
There is definitely something wrong with him.
  Works inspired by this one
      Podfic:_First_Heat by Princess2000204_(Lena204), [podfic]_First_Heat by
      sly_(curiously_me)
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their work!