Title: desolation and desecration (blasphemy of Sam)
Disclaimer: not my charcters
Warnings: future!fic
Pairings: implied Sam/Gabriel
Rating: PG
Wordcount: 295
Point of view: third
Prompt: Gabriel/Sam, Lucifer, "I must despise you now."
Every angel yet remaining, fallen and not, knew the instant Lucifer slipped inside Sam's skin. He flexed his wings, stretched his spine, and sighed in pleasure.
"Sam!" his brother screamed, lunging for him; Castiel caught him, eyes wide and desolate, and quickly spirited him away.
But Gabriel stayed, watching, and grief filled him to the brim, exploding out in anger.
Lucifer withstood all of his attacks, of course, desperate and uncoordinated. Lucifer was better, had always been better—the best of them all, save Michael.
Michael. He'd probably be appearing soon, if Dean's despair had anything to say about it.
"Ah, brother," Lucifer purred, a desecration of Sam's voice. He sauntered over, a stride Gabriel had never seen Sam take.
It burned him, the blasphemy of Sam, and Gabriel lashed out again, screaming things even he couldn't understand over the tempest whirling in and around him.
Through it all, Satan stood to Sam's full height, smirked a smirk Sam never had, and slowly spread his wings.
"You can choose me, you know," Satan finally said, cutting through Gabriel's rage. "You can be by my side."
"No," Gabriel replied, folding his wings in tight, glaring at the Adversary. "I despise you."
Satan reached out with Sam's hand and Gabriel jerked back. "You love this body, though, don't you?" He held up a hand, moving the fingers and examining Sam's skin. "He is impressive, isn't he? I'd honestly begun to think he'd forever deny me this…" He paused and smiled, slow and sweet. "This paradise."
"When Michael comes—" Gabriel started, and Satan cut him off with a laugh.
"Michael would already be here," Satan said. "Now, either join me—or be gone from my sight."
With one final, heartbroken glance to Sam's face, Gabriel fled.