It had been over 18 hours since Castiel left on a mission to save the boys from their numbing fate.
The air was thinning rapidly, and their life was on the clock.
Sam felt the pulling urge to sit alone in the confinements of his bedroom and pass away peacefully in his slumber, but he knew he couldn't leave Dean alone.
Instead they lay with their backs slouched against black leather in the lower basement, which Dean previously had trouble naming.
Even with time slowing down every waking second, like the agony of suffocating would last an eternity, he hadn't decided on whether to call it the Dean Cave or Fortress of Deanitude, so he chose the latter.
As they lay back in defeat, tears leaked out of their eyelids. Not because they were in despair, but because their lungs craved oxygen so immensely.
They stared hopelessly at the black screen in front of them, seeing straight through their darkened reflection.
They were surrounded by deafening silence for what felt like an eternity until Sam broke it as if he were snapping an animal's neck.
"Hey Dean," Sam's voice sounded quiet and raspy as if he were gargling gravel.
Dean felt obliged to answer but his mind and gut told him to stay quiet.
Although, in this situation, he thought silence was worse than facing the situation. He wasn't alone, he had Sam, and that's all the comfort he needed.
"Yeah," Dean answered with a quiet heave of breath as he shifted his neck to look at Sam's reddened face.
"You really think Cas can do it?" Sam sounded exhausted, and he could taste the tears piling on his taste buds.
"Yeah, I do. I mean, the little guy has persuaded me more times than id like to admit," Dean let out a small chuckle which sent him into a coughing fit as he closed his eyes and struggled for a gap in the relentless heaving.
"Okay," Sam sounded deep in thought as if he were making a life or death decision.
Their gasping had become audible as they wheezed and coughed with sweat and tears interlacing on their cheeks.
"Thank you," Sam's shuddered as his tears turned from signs of struggle to droplets of misery.
"For what?" Dean's eyebrows creased even though he knew why his was saying it.
"I know I haven't been the best brother. I mean with the whole drinking demon blood, Ruby, Purgatory, Lucifer, all of it... You always forgave and forgot, and I know I haven't always done that for you. So, thank you," Sam struggled to speak as he inhaled weakly after every few syllables.
Dean recalled old memories as he piled up on all of Sam's greatest betrayals. He felt so very hurt but knew that they have quite the opposing personality types.
Despite this, Dean refused to let this be Sam's deathbed apology. He was determined to make it through this.
"Save your breath Sammy," Dean replied as he slowly turned his head away from Sam, feeling a soft pull at his heart.
"Dean, you gotta face the facts here... If Cas was coming back, then he would've been here hours ago... They probably have him locked up somewhere," Sam mumbled as his words were slightly slurred in order to save his rapidly depleting energy.
"He's coming back Sam," Dean said sternly as he shifted his position, his neck craned toward the ceiling.
"You don't know that... Look, I'd just rather not spend my final moments with the false hope that I'll be swept off my feet, away from the danger. Cause when has anything ever actually gone our way without the world paying an even bigger price?" Sam argued as he reached his large hands up and ran them down his wet face.
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Supernatural Finale Season 15
FanfictionIt's the end of the world! Sam and Dean are trapped in the bunker after an apocalyptic nuclear explosion and are desperately running out of oxygen. The fall-out radiation threatens to wipe out the human race before hell does and all that is left is...